DeCS 
    2008 - March 17, 2008 version
    
       
        |  Alphabetic 
          Index of Descriptors   
           
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        |  | 
 | I Blood-Group System | 
| I-Cell Disease use Mucolipidoses | 
| I-Research use International Research Information System | 
| I-kappa B Kinase | 
| I-kappa B Proteins | 
| IA-like Antigens use Histocompatibility Antigens Class II | 
| IA-like Antigens, Human use HLA-D Antigens | 
| IACR use Internal Advisory Committee on Research | 
| IADB use Inter-American Development Bank | 
| IAIMS use Integrated Advanced Information Management Systems | 
| IAP Elements use Genes, Intracisternal A-Particle | 
| IAP Pertussis Toxin use Pertussis Toxin | 
| IBDV use Infectious bursal disease virus | 
| IBR-IPV Virus use Herpesvirus 1, Bovine | 
| IBRD use International Bank for Reconstruction and Development | 
| IC50 use Inhibitory Concentration 50 | 
| ICAM-1 use Intercellular Adhesion Molecule-1 | 
| ICD Codes use International Classification of Diseases | 
| ICD-10 use International Classification of Diseases | 
| ICD-9 use International Classification of Diseases | 
| ICE Protease use Caspase 1 | 
| ICF use International Classification of Functioning, Disability and Health | 
| ICSH (Interstitial Cell Stimulating Hormone) use Luteinizing Hormone | 
| ICSH Receptors use Receptors, LH | 
| ICSH, beta Subunit use Luteinizing Hormone, beta Subunit | 
| ICSI use Sperm Injections, Intracytoplasmic | 
| ICYP use Iodocyanopindolol | 
| IDB use Inter-American Development Bank | 
| IDDM use Diabetes Mellitus, Type 1 | 
| IDP use Inosine Diphosphate | 
| IDRC use International Development Research Centre | 
| IFN-Stimulated Gene Factor 3 Complex use Interferon-Stimulated Gene Factor 3 | 
| IFN-gamma-Inducing Factor use Interleukin-18 | 
| IGF Type 1 Receptor use Receptor, IGF Type 1 | 
| IGF Type 2 Receptor use Receptor, IGF Type 2 | 
| IGF-Binding Protein 1 use Insulin-Like Growth Factor Binding Protein 1 | 
| IGF-Binding Protein 2 use Insulin-Like Growth Factor Binding Protein 2 | 
| IGF-Binding Protein 3 use Insulin-Like Growth Factor Binding Protein 3 | 
| IGF-Binding Protein 4 use Insulin-Like Growth Factor Binding Protein 4 | 
| IGF-Binding Protein 5 use Insulin-Like Growth Factor Binding Protein 5 | 
| IGF-Binding Protein 6 use Insulin-Like Growth Factor Binding Protein 6 | 
| IGF-Binding Proteins use Insulin-Like Growth Factor Binding Proteins | 
| IGF-I use Insulin-Like Growth Factor I | 
| IGF-I Receptor use Receptor, IGF Type 1 | 
| IGF-II use Insulin-Like Growth Factor II | 
| IGF-II Receptor use Receptor, IGF Type 2 | 
| IGFBP use Insulin-Like Growth Factor Binding Proteins | 
| IGFBP-1 use Insulin-Like Growth Factor Binding Protein 1 | 
| IGFBP-2 use Insulin-Like Growth Factor Binding Protein 2 | 
| IGFBP-3 use Insulin-Like Growth Factor Binding Protein 3 | 
| IGFBP-4 use Insulin-Like Growth Factor Binding Protein 4 | 
| IGFBP-5 use Insulin-Like Growth Factor Binding Protein 5 | 
| IGFBP-6 use Insulin-Like Growth Factor Binding Protein 6 | 
| IHHNV use Densovirinae | 
| IHNV use Infectious hematopoietic necrosis virus | 
| IKe Phage use Bacteriophage IKe | 
| IL-1 use Interleukin-1 | 
| IL-1 Receptors use Receptors, Interleukin-1 | 
| IL-1 alpha use Interleukin-1alpha | 
| IL-1 beta use Interleukin-1beta | 
| IL-1 beta-Converting Enzyme use Caspase 1 | 
| IL-10 use Interleukin-10 | 
| IL-11 use Interleukin-11 | 
| IL-11 Receptors use Receptors, Interleukin-11 | 
| IL-12 use Interleukin-12 | 
| IL-12 Receptors use Receptors, Interleukin-12 | 
| IL-13 use Interleukin-13 | 
| IL-13 Receptors use Receptors, Interleukin-13 | 
| IL-15 use Interleukin-15 | 
| IL-15 Receptor use Receptors, Interleukin-15 | 
| IL-16 use Interleukin-16 | 
| IL-17 use Interleukin-17 | 
| IL-17 Receptors use Receptors, Interleukin-17 | 
| IL-18 use Interleukin-18 | 
| IL-18 Receptors use Receptors, Interleukin-18 | 
| IL-2 use Interleukin-2 | 
| IL-2 Receptors use Receptors, Interleukin-2 | 
| IL-21 Receptors use Receptors, Interleukin-21 | 
| IL-23 use Interleukin-23 | 
| IL-3 use Interleukin-3 | 
| IL-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
| IL-3 Receptors use Receptors, Interleukin-3 | 
| IL-4 use Interleukin-4 | 
| IL-4 Receptors use Receptors, Interleukin-4 | 
| IL-4 Receptors, Type I use Receptors, Interleukin-4, Type I | 
| IL-4 Receptors, Type II use Receptors, Interleukin-4, Type II | 
| IL-5 use Interleukin-5 | 
| IL-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
| IL-5 Receptors use Receptors, Interleukin-5 | 
| IL-6 use Interleukin-6 | 
| IL-6 Receptors use Receptors, Interleukin-6 | 
| IL-7 use Interleukin-7 | 
| IL-7 Receptors use Receptors, Interleukin-7 | 
| IL-8 use Interleukin-8 | 
| IL-8 Receptors use Receptors, Interleukin-8 | 
| IL-8A Receptors use Receptors, Interleukin-8A | 
| IL-9 use Interleukin-9 | 
| IL-9 Receptors use Receptors, Interleukin-9 | 
| IMCI use Integrated Management of Childhood Illness | 
| IMP use Inosine Monophosphate | 
| IMP Dehydrogenase | 
| IMP Nucleotidase use 5'-Nucleotidase | 
| IMP Phosphatase use 5'-Nucleotidase | 
| IMP Pyrophosphorylase use Hypoxanthine Phosphoribosyltransferase | 
| INCAP use Food and Nutrition Foundation of Central America and Panama | 
| INDEL Mutation | 
| INK4 Cyclin-Dependent Kinase Inhibitors use Cyclin-Dependent Kinase Inhibitor Proteins | 
| INN use International Nonproprietary Names for Pharmaceutical Substances | 
| INR use International Normalized Ratio | 
| IPA (Independent Practice Association) use Independent Practice Associations | 
| IPNV use Infectious pancreatic necrosis virus | 
| IPPB use Intermittent Positive-Pressure Breathing | 
| IPPV use Intermittent Positive-Pressure Ventilation | 
| IPSID use Immunoproliferative Small Intestinal Disease | 
| IRF-1 Transcription Factor use Interferon Regulatory Factor-1 | 
| IRF-2 Transcription Factor use Interferon Regulatory Factor-2 | 
| IRF-3 Transcription Factor use Interferon Regulatory Factor-3 | 
| IRF-7 Transcription Factor use Interferon Regulatory Factor-7 | 
| IS Elements use DNA Transposable Elements | 
| ISCOMs | 
| ISGF3 Transcription Factor use Interferon-Stimulated Gene Factor 3 | 
| ISO 14000 | 
| ISO 9000 | 
| ISS Score use Injury Severity Score | 
| ITP use Inosine Triphosphate | 
| IUGR use Fetal Growth Retardation | 
| IUdR use Idoxuridine | 
| IVIG use Immunoglobulins, Intravenous | 
| IWMR use Integrated Water Resource Management | 
| Ia Antigens use Histocompatibility Antigens Class II | 
| Iatrogenic Disease | 
| Iberis amara | 
| Ibero-American Scientific and Technological Program for Development | 
| Iboga use Tabernaemontana | 
| Ibogaine | 
| Ibotenic Acid | 
| Ibuprofen | 
| Ice | 
| Ice Barrier | 
| Ice Break Up | 
| Ice Break-Up use Ice Break Up | 
| Ice Cover | 
| Ice Cream | 
| Ice Dam use Ice Jam | 
| Ice Foods use Ice-cold Foods | 
| Ice Gorge use Ice Jam | 
| Ice Hockey use Hockey | 
| Ice Jam | 
| Ice Lolly use Ice-cold Foods | 
| Ice Pack use Ice Barrier | 
| Ice Plant use Mesembryanthemum | 
| Ice Skating use Skating | 
| Ice Storm | 
| Ice-cold Foods | 
| Iceland | 
| Iceplant use Mesembryanthemum | 
| Ichthyolum | 
| Ichthyosiform Erythroderma, Bullous Congenital use Hyperkeratosis, Epidermolytic | 
| Ichthyosiform Erythroderma, Congenital | 
| Ichthyosiform Erythroderma, Nonbullous Congenital use Ichthyosis, Lamellar | 
| Ichthyosis | 
| Ichthyosis Bullosa of Siemens | 
| Ichthyosis Vulgaris | 
| Ichthyosis, Lamellar | 
| Ichthyosis, Sex-Linked use Ichthyosis, X-Linked | 
| Ichthyosis, X-Linked | 
| Ichthyosporea use Mesomycetozoea | 
| Ichthyotoxinum use Serum anguillae | 
| Icosahedral Cytoplasmic Deoxyriboviruses use Iridoviridae | 
| Icosanoids use Eicosanoids | 
| Ictalurid herpesvirus 1 use Ictalurivirus | 
| Ictaluridae | 
| Ictalurivirus | 
| Ictalurus use Ictaluridae | 
| Icterus use Jaundice | 
| Ictodes foetida | 
| Id | 
| Idaho | 
| Idarubicin | 
| Idazoxan | 
| Ideational Apraxia use Apraxias | 
| Identification (Psychology) | 
| Identification Code for Hazardous Materials | 
| Identification, Social use Social Identification | 
| Identity Crisis | 
| Identity and Quality Pattern for Products and Services | 
| Ideomotor Apraxia use Apraxia, Ideomotor | 
| Idiocy use Mental Retardation | 
| Idiomarina use Alteromonadaceae | 
| Idiopathic CD4-Positive T-Lymphocytopenia use T-Lymphocytopenia, Idiopathic CD4-Positive | 
| Idiopathic CNS Hypersomnolence use Hypersomnolence, Idiopathic | 
| Idiopathic Environmental Intolerances use Multiple Chemical Sensitivity | 
| Idiopathic Hypercatabolic Hypoproteinemia use Protein-Losing Enteropathies | 
| Idiopathic Hypereosinophilic Syndrome use Hypereosinophilic Syndrome | 
| Idiopathic Hypertrophic Subaortic Stenosis use Cardiomyopathy, Hypertrophic | 
| Idiopathic Hypertrophic Subvalvular Stenosis use Cardiomyopathy, Hypertrophic | 
| Idiopathic Intracranial Hypertension use Pseudotumor Cerebri | 
| Idiopathic Myoclonic Epilepsy use Epilepsies, Myoclonic | 
| Idiopathic Orofacial Dyskinesia use Meige Syndrome | 
| Idiopathic Orthostatic Hypotension, Shy-Drager Type use Shy-Drager Syndrome | 
| Idiopathic Parkinson Disease use Parkinson Disease | 
| Idiopathic Thrombocytopenic Purpura use Purpura, Thrombocytopenic, Idiopathic | 
| Idiopathic Torsion Dystonia use Dystonia Musculorum Deformans | 
| Idiosyncrasy | 
| Idiotypes, Immunoglobulin use Immunoglobulin Idiotypes | 
| Iditol Dehydrogenase use L-Iditol 2-Dehydrogenase | 
| Idnoreovirus use Reoviridae | 
| Idoxuridine | 
| Iduronate Sulfatase | 
| Iduronatesulfate Sulfohydrolase use Iduronate Sulfatase | 
| Iduronic Acid | 
| Iduronidase | 
| Ifosfamide | 
| Ig Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin | 
| IgA use Immunoglobulin A | 
| IgA Deficiency | 
| IgA, Exocrine use Immunoglobulin A, Secretory | 
| IgA, Secretory use Immunoglobulin A, Secretory | 
| IgD use Immunoglobulin D | 
| IgE use Immunoglobulin E | 
| IgE Receptors use Receptors, IgE | 
| IgE-Mediated Hypersensitivity use Hypersensitivity, Immediate | 
| IgG use Immunoglobulin G | 
| IgG Deficiency | 
| IgG Receptors use Receptors, IgG | 
| IgM use Immunoglobulin M | 
| Ignatia amara | 
| Ignicoccus use Desulfurococcaceae | 
| Iguanas | 
| Ikaros Transcription Factor | 
| Ikshugandha use Tribulus terrestris | 
| Il-16 Receptors use Receptors, Interleukin-16 | 
| Ilarvirus | 
| Ileal Conduit use Urinary Diversion | 
| Ileal Diseases | 
| Ileal Neoplasms | 
| Ileal Pouches use Colonic Pouches | 
| Ileal Reservoirs use Colonic Pouches | 
| Ileitis | 
| Ileitis, Regional use Crohn Disease | 
| Ileitis, Terminal use Crohn Disease | 
| Ileoanal Pouches use Colonic Pouches | 
| Ileoanal Reservoirs use Colonic Pouches | 
| Ileocecal Valve | 
| Ileocolitis use Crohn Disease | 
| Ileojejunal Bypass use Jejunoileal Bypass | 
| Ileostomy | 
| Iles Comores use Comoros | 
| Ileum | 
| Ileus | 
| Ilex | 
| Ilex aquifolium | 
| Ilex casseine | 
| Ilex guayusa | 
| Ilex paraguariensis | 
| Ilex verticillata use Prinos verticillatus | 
| Ilex vomitoria | 
| Iliac Aneurysm | 
| Iliac Artery | 
| Iliac Vein | 
| Iliopsoas Abscess use Psoas Abscess | 
| Ilium | 
| Ilizarov Technique | 
| Ill use Patients | 
| Ill, Incurable use Incurable Patients | 
| Illecebrum verticillatum | 
| Illegal Immigration | 
| Illegitimacy | 
| Illex use Decapodiformes | 
| Illicit Connections use Illicit Installations | 
| Illicit Drug Testing use Substance Abuse Detection | 
| Illicit Drugs use Street Drugs | 
| Illicit Installations | 
| Illicium | 
| Illicium verum use Anisum stellatum | 
| Illicum | 
| Illinois | 
| Illiteracy use Educational Status | 
| Illness use Disease | 
| Illness Behavior use Sick Role | 
| Illness Days use Sick Leave | 
| Illuminating Gas Poisoning use Carbon Monoxide Poisoning | 
| Illumination use Lighting | 
| Illusions | 
| Illustrated Books use Books, Illustrated | 
| Illustration, Medical use Medical Illustration | 
| Iloprost | 
| Iltovirus | 
| Image Analysis, Computer-Assisted use Image Processing, Computer-Assisted | 
| Image Cytometry | 
| Image Enhancement | 
| Image Interpretation, Computer-Assisted | 
| Image Processing, Computer-Assisted | 
| Image Reconstruction use Image Processing, Computer-Assisted | 
| Image-Guided Surgery use Surgery, Computer-Assisted | 
| Imagery (Psychotherapy) | 
| Imagery, Guided use Imagery (Psychotherapy) | 
| Imagination | 
| Imaging, Diagnostic use Diagnostic Imaging | 
| Imaging, Medical use Diagnostic Imaging | 
| Imaging, Three-Dimensional | 
| Imaging, Three-Dimensional, Computer Assisted use Imaging, Three-Dimensional | 
| Imbibition Methods | 
| Imecromone use Hymecromone | 
| Imhoff Tanks | 
| Imidamine use Antazoline | 
| Imidates use Imidoesters | 
| Imidazoles | 
| Imidazolidines | 
| Imidazolidinethione use Ethylenethiourea | 
| Imidazoline Receptors | 
| Imidazoline-Guanidinium Receptors use Imidazoline Receptors | 
| Imidazolines | 
| Imides | 
| Imidobenzyle use Imipramine | 
| Imidocarb | 
| Imidoesters | 
| Imines | 
| Imino Acids | 
| Imino Furanoses | 
| Imino Pyranoses | 
| Imino Sugars | 
| Imipemide use Imipenem | 
| Imipenem | 
| Imipramine | 
| Imitative Behavior | 
| Imizin use Imipramine | 
| Immature B-Lymphocytes use Precursor Cells, B-Lymphoid | 
| Immediate Recall use Memory, Short-Term | 
| Immediate-Early Genes use Genes, Immediate-Early | 
| Immediate-Early Proteins | 
| Immersion | 
| Immersion Foot | 
| Immigrants use Emigrants and Immigrants | 
| Immigration use Emigration and Immigration | 
| Immobility Response, Tonic | 
| Immobilization | 
| Immobilization Reaction, Cataleptic use Freezing Reaction, Cataleptic | 
| Immobilization, Tonic use Immobility Response, Tonic | 
| Immobilized Cells use Cells, Immobilized | 
| Immobilized Enzymes use Enzymes, Immobilized | 
| Immotile Cilia Syndrome use Ciliary Motility Disorders | 
| Immune Adherence Reaction | 
| Immune Complex use Antigen-Antibody Complex | 
| Immune Complex Diseases | 
| Immune Disorders use Immune System Diseases | 
| Immune Disorders, Nervous System use Autoimmune Diseases of the Nervous System | 
| Immune Escape, Tumor use Tumor Escape | 
| Immune Globulin, Rh use Rho(D) Immune Globulin | 
| Immune Globulins use Immunoglobulins | 
| Immune Monitoring use Monitoring, Immunologic | 
| Immune Precipitates use Precipitins | 
| Immune RNA Manipulation use Immunotherapy, Active | 
| Immune Reconstitution Disease use Immune Reconstitution Inflammatory Syndrome | 
| Immune Reconstitution Inflammatory Syndrome | 
| Immune Response Antigens use Histocompatibility Antigens Class II | 
| Immune Response Genes use Genes, MHC Class II | 
| Immune Response, Mucosal use Immunity, Mucosal | 
| Immune Response-Associated Antigens, Human use HLA-D Antigens | 
| Immune Restoration Syndrome use Immune Reconstitution Inflammatory Syndrome | 
| Immune Sera | 
| Immune System | 
| Immune System Diseases | 
| Immune Tolerance | 
| Immune-Associated Antigens use Histocompatibility Antigens Class II | 
| Immune-Associated Antigens, Human use HLA-D Antigens | 
| Immune-Response Antigens, Human use HLA-D Antigens | 
| Immune-Response-Associated Antigens use Histocompatibility Antigens Class II | 
| Immunity | 
| Immunity, Active | 
| Immunity, Cellular | 
| Immunity, Herd | 
| Immunity, Humoral use Antibody Formation | 
| Immunity, Innate use Immunity, Natural | 
| Immunity, Maternally-Acquired | 
| Immunity, Mucosal | 
| Immunity, Native use Immunity, Natural | 
| Immunity, Natural | 
| Immunity, Non-Specific use Immunity, Natural | 
| Immunization | 
| Immunization Coverage | 
| Immunization Programs | 
| Immunization Schedule | 
| Immunization, Active use Vaccination | 
| Immunization, Booster use Immunization, Secondary | 
| Immunization, Passive | 
| Immunization, Secondary | 
| Immunoactivators use Adjuvants, Immunologic | 
| Immunoadhesins, CD4 use CD4 Immunoadhesins | 
| Immunoadjuvants use Adjuvants, Immunologic | 
| Immunoadsorbent Techniques use Immunosorbent Techniques | 
| Immunoadsorbents use Immunosorbents | 
| Immunoassay | 
| Immunoassay, Enzyme use Immunoenzyme Techniques | 
| Immunoassay, Fluorescence Polarization use Fluorescence Polarization Immunoassay | 
| Immunoblastic Large-Cell Lymphoma use Lymphoma, Large-Cell, Immunoblastic | 
| Immunoblastic Lymphadenopathy | 
| Immunoblastic Lymphosarcoma, Diffuse use Lymphoma, Large-Cell, Immunoblastic | 
| Immunoblastoma use Lymphoma, Large-Cell, Immunoblastic | 
| Immunoblotting | 
| Immunoblotting, Western use Blotting, Western | 
| Immunochemistry | 
| Immunocompatibility use Histocompatibility | 
| Immunocompetence | 
| Immunocompromised Host | 
| Immunoconglutinins | 
| Immunoconjugates | 
| Immunocontraception use Contraception, Immunologic | 
| Immunocytoadherence use Rosette Formation | 
| Immunocytochemistry use Immunohistochemistry | 
| Immunodeficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome | 
| Immunodeficiency Virus, Bovine | 
| Immunodeficiency Virus, Feline | 
| Immunodeficiency Viruses, Primate use Lentiviruses, Primate | 
| Immunodeficiency, Common Variable use Common Variable Immunodeficiency | 
| Immunodeficiency, Severe Combined use Severe Combined Immunodeficiency | 
| Immunodiagnosis use Immunologic Tests | 
| Immunodiffusion | 
| Immunodominant Epitopes | 
| Immunoelectroblotting use Immunoblotting | 
| Immunoelectron Microscopy use Microscopy, Immunoelectron | 
| Immunoelectroosmophoresis use Counterimmunoelectrophoresis | 
| Immunoelectrophoresis | 
| Immunoelectrophoresis, Countercurrent use Counterimmunoelectrophoresis | 
| Immunoelectrophoresis, Crossed use Immunoelectrophoresis, Two-Dimensional | 
| Immunoelectrophoresis, Crossover use Counterimmunoelectrophoresis | 
| Immunoelectrophoresis, Two-Dimensional | 
| Immunoenzyme Techniques | 
| Immunofluorescence Antibody Test, Direct use Fluorescent Antibody Technique, Direct | 
| Immunofluorescence Antibody Test, Indirect use Fluorescent Antibody Technique, Indirect | 
| Immunofluorescence Microscopy use Microscopy, Fluorescence | 
| Immunofluorescence Technique use Fluorescent Antibody Technique | 
| Immunofluorescence Technique, Direct use Fluorescent Antibody Technique, Direct | 
| Immunofluorescence Technique, Indirect use Fluorescent Antibody Technique, Indirect | 
| Immunofluorometric Assay use Fluoroimmunoassay | 
| Immunogenetics | 
| Immunogens, Synthetic use Vaccines, Synthetic | 
| Immunoglobulin A | 
| Immunoglobulin A Nephropathy use Glomerulonephritis, IGA | 
| Immunoglobulin A, Secretory | 
| Immunoglobulin Allotypes | 
| Immunoglobulin Class Switching | 
| Immunoglobulin Constant Region use Immunoglobulin Constant Regions | 
| Immunoglobulin Constant Regions | 
| Immunoglobulin D | 
| Immunoglobulin E | 
| Immunoglobulin Enhancer-Binding Protein use NF-kappa B | 
| Immunoglobulin Fab Fragments | 
| Immunoglobulin Fc Fragments | 
| Immunoglobulin Fragments | 
| Immunoglobulin G | 
| Immunoglobulin Genes use Genes, Immunoglobulin | 
| Immunoglobulin Gm Allotypes | 
| Immunoglobulin Heavy Chain Genes use Genes, Immunoglobulin Heavy Chain | 
| Immunoglobulin Heavy Chains | 
| Immunoglobulin Idiotypes | 
| Immunoglobulin Inv Allotypes use Immunoglobulin Km Allotypes | 
| Immunoglobulin Isotypes | 
| Immunoglobulin J Recombination Signal Sequence-Binding Protein | 
| Immunoglobulin J-Chains | 
| Immunoglobulin Joining Region | 
| Immunoglobulin Km Allotypes | 
| Immunoglobulin Light Chains | 
| Immunoglobulin Light Chains, Surrogate | 
| Immunoglobulin M | 
| Immunoglobulin Recombinases use VDJ Recombinases | 
| Immunoglobulin Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin | 
| Immunoglobulin Subunits | 
| Immunoglobulin Switch Region | 
| Immunoglobulin Therapy use Immunization, Passive | 
| Immunoglobulin Variable Region | 
| Immunoglobulin alpha-Chains | 
| Immunoglobulin delta-Chains | 
| Immunoglobulin epsilon-Chains | 
| Immunoglobulin gamma-Chains | 
| Immunoglobulin kappa-Chains | 
| Immunoglobulin lambda-Chains | 
| Immunoglobulin mu-Chains | 
| Immunoglobulin-Producing Cells use Antibody-Producing Cells | 
| Immunoglobulin-Secreting Cells use Antibody-Producing Cells | 
| Immunoglobulins | 
| Immunoglobulins, Fab Fragment use Immunoglobulin Fab Fragments | 
| Immunoglobulins, Heavy-Chain use Immunoglobulin Heavy Chains | 
| Immunoglobulins, Intravenous | 
| Immunoglobulins, Light-Chain use Immunoglobulin Light Chains | 
| Immunoglobulins, Oligoclonal use Oligoclonal Bands | 
| Immunoglobulins, Thyroid-Stimulating | 
| Immunoglobulins, alpha-Chain use Immunoglobulin alpha-Chains | 
| Immunoglobulins, delta-Chain use Immunoglobulin delta-Chains | 
| Immunoglobulins, epsilon-Chain use Immunoglobulin epsilon-Chains | 
| Immunoglobulins, gamma-Chain use Immunoglobulin gamma-Chains | 
| Immunoglobulins, kappa-Chain use Immunoglobulin kappa-Chains | 
| Immunoglobulins, lambda-Chain use Immunoglobulin lambda-Chains | 
| Immunoglobulins, mu-Chain use Immunoglobulin mu-Chains | 
| Immunogold Techniques use Immunohistochemistry | 
| Immunogold-Silver Techniques use Immunohistochemistry | 
| Immunohistochemistry | 
| Immunohistocytochemistry use Immunohistochemistry | 
| Immunolabeling Techniques use Immunohistochemistry | 
| Immunologic Accessory Cells use Antigen-Presenting Cells | 
| Immunologic Capping | 
| Immunologic Competence use Immunocompetence | 
| Immunologic Deficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome | 
| Immunologic Deficiency Syndromes | 
| Immunologic Diseases use Immune System Diseases | 
| Immunologic Enhancement of Grafts use Graft Enhancement, Immunologic | 
| Immunologic Factors | 
| Immunologic Markers use Biological Markers | 
| Immunologic Memory | 
| Immunologic Monitoring use Monitoring, Immunologic | 
| Immunologic Receptors use Receptors, Immunologic | 
| Immunologic Stimulation use Immunization | 
| Immunologic Suppressor Factors use Suppressor Factors, Immunologic | 
| Immunologic Surveillance | 
| Immunologic Techniques | 
| Immunologic Tests | 
| Immunological Models use Models, Immunological | 
| Immunology use Allergy and Immunology | 
| Immunology, Transplantation use Transplantation Immunology | 
| Immunomagnetic Bead Technique use Immunomagnetic Separation | 
| Immunomagnetic Purging use Immunomagnetic Separation | 
| Immunomagnetic Separation | 
| Immunomodulators use Immunologic Factors | 
| Immunoperoxidase Techniques use Immunoenzyme Techniques | 
| Immunophenotyping | 
| Immunophilins | 
| Immunopotentiators use Adjuvants, Immunologic | 
| Immunoprecipitation | 
| Immunoprecipitation, Chromatin use Chromatin Immunoprecipitation | 
| Immunoproliferative Disorders | 
| Immunoproliferative Small Intestinal Disease | 
| Immunoproteins | 
| Immunoradiometric Assay | 
| Immunoscintigraphy, Radiolabeled use Radioimmunodetection | 
| Immunosorbent Techniques | 
| Immunosorbents | 
| Immunostimulants use Adjuvants, Immunologic | 
| Immunostimulating Complexes use ISCOMs | 
| Immunostimulation use Immunization | 
| Immunosuppressed Host use Immunocompromised Host | 
| Immunosuppression | 
| Immunosuppression (Physiology) use Immune Tolerance | 
| Immunosuppressive Agents | 
| Immunosurveillance use Monitoring, Immunologic | 
| Immunotherapy | 
| Immunotherapy, Active | 
| Immunotherapy, Adoptive | 
| Immunotherapy, Allergen use Desensitization, Immunologic | 
| Immunotherapy, Passive use Immunization, Passive | 
| Immunotoxins | 
| Impact Assessment use Evaluation | 
| Impact Evaluation use Evaluation Studies as Topic | 
| Impact Factor | 
| Impact Production | 
| Impact Seizure use Epilepsy, Post-Traumatic | 
| Impact in the Health Condition use Health Evaluation | 
| Impact of Disasters | 
| Impacts on Health | 
| Impatiens | 
| Impatiens necrotic spot virus use Tospovirus | 
| Impedance use Electric Impedance | 
| Impedance Tests, Acoustic use Acoustic Impedance Tests | 
| Impedance, Transthoracic use Cardiography, Impedance | 
| Imperata use Poaceae | 
| Imperatoria ostruthium | 
| Impervious Lining | 
| Impervious Soils | 
| Impetigo | 
| Impetigo Contagiosa use Impetigo | 
| Impila use Callilepis | 
| Implant Radiotherapy use Brachytherapy | 
| Implant, Middle Ear use Ossicular Prosthesis | 
| Implant-Supported Dental Prosthesis use Dental Prosthesis, Implant-Supported | 
| Implantable Cardioverter-Defibrillators use Defibrillators, Implantable | 
| Implantable Catheters use Catheters, Indwelling | 
| Implantable Defibrillators use Defibrillators, Implantable | 
| Implantable Infusion Pumps use Infusion Pumps, Implantable | 
| Implantation, Blastocyst use Embryo Implantation | 
| Implantation, Ovum, Delayed use Embryo Implantation, Delayed | 
| Implants, Absorbable use Absorbable Implants | 
| Implants, Artificial use Prostheses and Implants | 
| Implants, Breast use Breast Implants | 
| Implants, Cochlear use Cochlear Implants | 
| Implants, Dental use Dental Implants | 
| Implants, Experimental | 
| Implants, Molteno use Molteno Implants | 
| Implosive Therapy | 
| Importation of Products | 
| Imported Products use Importation of Products | 
| Importins use Karyopherins | 
| Impotence use Erectile Dysfunction | 
| Impotence, Arteriogenic use Impotence, Vasculogenic | 
| Impotence, Vasculogenic | 
| Impotence, Venogenic use Impotence, Vasculogenic | 
| Impounding Discharge | 
| Impoundings | 
| Imprinting (Psychology) | 
| Impromidine | 
| Imprudence | 
| Impulse Control Disorders | 
| Impulse-Ridden Personality use Personality Disorders | 
| Impulsive Behavior | 
| Impulsive Petit Mal, Janz use Myoclonic Epilepsy, Juvenile | 
| Imputability | 
| In Situ Disposal | 
| In Situ Hybridization | 
| In Situ Hybridization, Fluorescence | 
| In Situ Labeling, Primed use Primed In Situ Labeling | 
| In Situ Nick-End Labeling | 
| In Vitro | 
| In Vitro Assays in Homeopathy use Basic Homeopathic Research | 
| In Vitro Research in Homeopathy use Basic Homeopathic Research | 
| In Vivo NMR Spectroscopy use Magnetic Resonance Spectroscopy | 
| In-Hospital Mortality use Hospital Mortality | 
| Inactive Population | 
| Inadequate Personality use Personality Disorders | 
| Inappropriate ACTH Secretion Syndrome use Pituitary ACTH Hypersecretion | 
| Inappropriate ADH Syndrome | 
| Inappropriate Adrenocorticotropic Hormone Secretion use Pituitary ACTH Hypersecretion | 
| Inappropriate FSH Secretion Syndrome use Hyperpituitarism | 
| Inappropriate Follicle Stimulating Hormone Secretion use Hyperpituitarism | 
| Inappropriate Growth Hormone Secretion Syndrome (Acromegaly) use Acromegaly | 
| Inappropriate LH Secretion Syndrome use Hyperpituitarism | 
| Inappropriate Luteinizing Hormone Secretion use Hyperpituitarism | 
| Inappropriate TSH Secretion Syndrome use Hyperpituitarism | 
| Inappropriate Thyroid Stimulating Hormone Secretion use Hyperpituitarism | 
| Inappropriate Vasopressin Secretion Syndrome use Inappropriate ADH Syndrome | 
| Inborn Errors of Metabolism use Metabolism, Inborn Errors | 
| Inborn Errors of Metabolism, Brain use Brain Diseases, Metabolic, Inborn | 
| Inbreeding | 
| Inbreeding, Human use Consanguinity | 
| Incandescence | 
| Incentive Plans, Employee use Employee Incentive Plans | 
| Incentive Plans, Physician use Physician Incentive Plans | 
| Incentive Reimbursement use Reimbursement, Incentive | 
| Incentives use Motivation | 
| Incentives for Private Investment on Research and Development | 
| Incest | 
| Incidence | 
| Incidence Rate use Incidence | 
| Incidence Studies use Cohort Studies | 
| Incident Reporting, Hospital use Risk Management | 
| Incidental Findings | 
| Incineration | 
| Incinerators | 
| Incipient Schizophrenia use Schizotypal Personality Disorder | 
| Incisive Papilla use Palate | 
| Incisor | 
| Inclusion Bodies | 
| Inclusion Bodies, Intranuclear use Intranuclear Inclusion Bodies | 
| Inclusion Bodies, Viral | 
| Inclusion Body Myositis use Myositis, Inclusion Body | 
| Inclusion Disease use Cytomegalovirus Infections | 
| Income | 
| Income Tax | 
| Incompatible Drugs use Drug Incompatibility | 
| Incompatible Waste | 
| Incompetency, Mental use Mental Competency | 
| Incomplete Viruses use Defective Viruses | 
| Incontinence Pads | 
| Incontinentia Pigmenti | 
| Incontinentia Pigmenti Achromians use Pigmentation Disorders | 
| Incoordination use Ataxia | 
| Increased Gravity use Hypergravity | 
| Increasing Dynamization use Increasing Scale | 
| Increasing Scale | 
| Incretins | 
| Incrustant Water use Water Hardness | 
| Incubators | 
| Incubators, Infant | 
| Incunabula | 
| Incurable Patients | 
| Incus | 
| Indans | 
| Indantrione Monohydrate use Ninhydrin | 
| Indapamide | 
| Indazoles | 
| Indenes | 
| Independent Living use Activities of Daily Living | 
| Independent Practice Associations | 
| Independent State of Samoa | 
| Index Medicus use MEDLINE | 
| Indexes | 
| Indexes as Topic use Abstracting and Indexing as Topic | 
| Indexing and Abstracting as Topic use Abstracting and Indexing as Topic | 
| Indexing as Topic use Abstracting and Indexing as Topic | 
| India | 
| Indian Corn use Zea mays | 
| Indian Fig Opuntia use Opuntia ficus | 
| Indian Finger Millet use Eleusine | 
| Indian Health Service (U.S.) use United States Indian Health Service | 
| Indian Laburnum use Cassia | 
| Indian Ocean | 
| Indian Ocean Islands | 
| Indiana | 
| Indians, Central American | 
| Indians, North American | 
| Indians, South American | 
| Indican | 
| Indicator Dilution Techniques | 
| Indicators | 
| Indicators and Reagents | 
| Indicators of Health Services | 
| Indicators of Morbidity and Mortality | 
| Indicators of Quality of Life | 
| Indigency use Poverty | 
| Indigency, Medical use Medical Indigency | 
| Indigenous Communities use Indigenous Population | 
| Indigenous Farmers use Indigenous Population | 
| Indigenous Health | 
| Indigenous Organizations | 
| Indigenous Population | 
| Indigenous' Health use Indigenous Health | 
| Indigent Care use Uncompensated Care | 
| Indigestion use Dyspepsia | 
| Indigo Carmine use Indigotindisulfonate Sodium | 
| Indigo tinctoria | 
| Indigofera | 
| Indigotindisulfonate Sodium | 
| Indinavir | 
| Indirect Parameters | 
| Indispositions | 
| Indium | 
| Indium Metallicum | 
| Indium Radioisotopes | 
| Individual Differences use Individuality | 
| Individual Diseases | 
| Individual Health Care Services use Health Services | 
| Individual Practice Associations use Independent Practice Associations | 
| Individuality | 
| Individuation | 
| Indocyanine Green | 
| Indole Alkaloids | 
| Indole-3-Glycerol-Phosphate Synthase | 
| Indoleacetic Acids | 
| Indoleamine-Pyrrole 2,3,-Dioxygenase | 
| Indolequinones | 
| Indoles | 
| Indolizidines | 
| Indolizines | 
| Indolum | 
| Indolylethylamines use Tryptamines | 
| Indomethacin | 
| Indonesia | 
| Indonesian New Guinea use Indonesia | 
| Indoor Air | 
| Indoor Air Pollution use Air Pollution, Indoor | 
| Indoor Air Quality use Air Pollution, Indoor | 
| Indophenol | 
| Indoprofen | 
| Indoramin | 
| Indri use Strepsirhini | 
| Indriidae use Strepsirhini | 
| Induced Seismicity | 
| Inducer Cells use T-Lymphocytes, Helper-Inducer | 
| Industrial Areas use Industrial Zones | 
| Industrial Arts use Technology | 
| Industrial Chimneys | 
| Industrial Dentistry use Occupational Dentistry | 
| Industrial Development use Industrialization (Environmental Health) | 
| Industrial Disaster | 
| Industrial Effluent Treatment | 
| Industrial Effluents | 
| Industrial Effluents Disposal | 
| Industrial Equipment use Plant Equipment | 
| Industrial Expansion use Industrialization (Environmental Health) | 
| Industrial Feeding use Collective Feeding | 
| Industrial Fires | 
| Industrial Fumes use Industrial Pollutants | 
| Industrial Health use Occupational Health | 
| Industrial Hygiene use Occupational Health | 
| Industrial Medicine use Occupational Medicine | 
| Industrial Microbiology | 
| Industrial Nursing use Occupational Health Nursing | 
| Industrial Oils | 
| Industrial Parks use Industrial Zones | 
| Industrial Pollutants | 
| Industrial Pollution | 
| Industrial Progress use Industrialization (Environmental Health) | 
| Industrial Projects | 
| Industrial Safety | 
| Industrial Sanitation | 
| Industrial Settlements use Industrial Zones | 
| Industrial Sludges | 
| Industrial Sources use Industrial Pollutants | 
| Industrial Waste | 
| Industrial Wastewater use Industrial Effluents | 
| Industrial Water | 
| Industrial Water Consumption | 
| Industrial Zones | 
| Industrialization use Industry | 
| Industrialization (Environmental Health) | 
| Industrialized Countries use Developed Countries | 
| Industrialized Foods | 
| Industry | 
| Industry Safety use Industrial Safety | 
| Inequality in Health use Health Inequalities | 
| Inequity use Social Inequity | 
| Inert Gas Narcosis | 
| Inertia | 
| Infant | 
| Infant Behavior | 
| Infant Care | 
| Infant Development use Child Development | 
| Infant Equipment | 
| Infant Food | 
| Infant Formula | 
| Infant Furniture use Infant Equipment | 
| Infant Health use Infant Welfare | 
| Infant Health Services use Child Health Services | 
| Infant Malnutrition use Infant Nutrition Disorders | 
| Infant Mortality | 
| Infant Mortality Rate | 
| Infant Mortality by Specific Risk use Infant Mortality | 
| Infant Mortality, Late use Late Infant Mortality | 
| Infant Nutrition | 
| Infant Nutrition Disorders | 
| Infant Nutrition Physiology | 
| Infant Psychology use Child Psychology | 
| Infant Radiant Warmers use Incubators, Infant | 
| Infant Strollers use Infant Equipment | 
| Infant Swings use Infant Equipment | 
| Infant Walkers use Infant Equipment | 
| Infant Welfare | 
| Infant, Extremely Low Birth Weight | 
| Infant, Low Birth Weight | 
| Infant, Newborn | 
| Infant, Newborn, Diseases | 
| Infant, Newborn, Intensive Care use Intensive Care, Neonatal | 
| Infant, Newborn, Screening use Neonatal Screening | 
| Infant, Postmature | 
| Infant, Premature | 
| Infant, Premature, Diseases | 
| Infant, Small for Gestational Age | 
| Infant, Very Low Birth Weight | 
| Infanticide | 
| Infantile Cortical Hyperostosis use Hyperostosis, Cortical, Congenital | 
| Infantile Papular Acrodermatitis use Acrodermatitis | 
| Infantile Paralysis use Poliomyelitis | 
| Infantile Refsum Disease use Refsum Disease, Infantile | 
| Infantile Sialic Acid Storage Disease use Sialic Acid Storage Disease | 
| Infantile Spasms use Spasms, Infantile | 
| Infantile Spinal Muscular Atrophy use Spinal Muscular Atrophies of Childhood | 
| Infarction | 
| Infarction, Anterior Cerebral Artery | 
| Infarction, Cerebral use Cerebral Infarction | 
| Infarction, Middle Cerebral Artery | 
| Infarction, Posterior Cerebral Artery | 
| Infection | 
| Infection Control | 
| Infection Control Practitioners | 
| Infection Control Services, Hospital | 
| Infection Control, Dental | 
| Infections, Cardiovascular use Cardiovascular Infections | 
| Infectious Anemia Virus, Equine | 
| Infectious Arteritis Virus, Equine use Arteritis Virus, Equine | 
| Infectious Bovine Rhinotracheitis | 
| Infectious Bovine Rhinotracheitis Virus use Herpesvirus 1, Bovine | 
| Infectious Bursal Agent use Infectious bursal disease virus | 
| Infectious Disease Contact Tracing use Contact Tracing | 
| Infectious Disease Reporting use Disease Notification | 
| Infectious Diseases use Communicable Diseases | 
| Infectious Diseases, Emerging use Communicable Diseases, Emerging | 
| Infectious Encephalomyelitis, Viral use Encephalitis, Viral | 
| Infectious Enteritis Virus of Mink use Mink enteritis virus | 
| Infectious Enteritis Virus, Feline use Feline panleukopenia virus | 
| Infectious Keratoconjunctivitis use Keratoconjunctivitis, Infectious | 
| Infectious Mononucleosis | 
| Infectious Mononucleosis Virus use Herpesvirus 4, Human | 
| Infectious Mononucleosis-Like Syndrome, Chronic use Fatigue Syndrome, Chronic | 
| Infectious Peritonitis Virus, Feline use Coronavirus, Feline | 
| Infectious Pustular Vulvovaginitis Virus use Herpesvirus 1, Bovine | 
| Infectious bronchitis virus | 
| Infectious bursal disease virus | 
| Infectious hematopoietic necrosis virus | 
| Infectious hypodermal and hematopoietic necrosis virus use Densovirinae | 
| Infectious pancreatic necrosis virus | 
| Infectious salmon anemia virus use Isavirus | 
| Infectology | 
| Inferior Colliculi | 
| Inferior Petrosal Sinus Sampling use Petrosal Sinus Sampling | 
| Inferior Pulvinar Nucleus use Pulvinar | 
| Inferior Vena Cava Filters use Vena Cava Filters | 
| Infertility | 
| Infertility Agents use Fertility Agents | 
| Infertility Agents, Female use Fertility Agents, Female | 
| Infertility, Female | 
| Infertility, Male | 
| Infertility, Plant use Plant Infertility | 
| Infibulation use Circumcision, Female | 
| Infiltration Galleries | 
| Infiltration-Percolation Ditches | 
| Infinitesimal Dose use Small Doses | 
| Inflammable Wastes | 
| Inflammation | 
| Inflammation Mediators | 
| Inflammation, Brain use Encephalitis | 
| Inflammation, Endodontic use Pulpitis | 
| Inflammation, Perinephrium use Perinephritis | 
| Inflammatory Bowel Diseases | 
| Inflammatory Myopathy use Myositis | 
| Inflammatory Response Syndrome, Systemic use Systemic Inflammatory Response Syndrome | 
| Inflation, Economic | 
| Influence of Aliments use Modalities, Alimentary | 
| Influenza A Virus, H1N1 Subtype | 
| Influenza A Virus, H2N2 Subtype | 
| Influenza A Virus, H3N2 Subtype | 
| Influenza A Virus, H3N8 Subtype | 
| Influenza A Virus, H5N1 Subtype | 
| Influenza A Virus, H5N2 Subtype | 
| Influenza A Virus, H7N7 Subtype | 
| Influenza A Virus, H9N2 Subtype | 
| Influenza A virus | 
| Influenza B virus | 
| Influenza C Virus use Influenzavirus C | 
| Influenza D Virus use Thogotovirus | 
| Influenza Vaccines | 
| Influenza Virus, Equine use Influenza A Virus, H3N8 Subtype | 
| Influenza Viruses use Orthomyxoviridae | 
| Influenza Viruses Type A use Influenza A virus | 
| Influenza Viruses Type B use Influenza B virus | 
| Influenza Viruses Type C use Influenzavirus C | 
| Influenza Viruses Type D use Thogotovirus | 
| Influenza in Birds | 
| Influenza in Humans use Influenza, Human | 
| Influenza, Avian use Influenza in Birds | 
| Influenza, Human | 
| Influenzavirus A | 
| Influenzavirus B | 
| Influenzavirus C | 
| Influenzavirus D use Thogotovirus | 
| Influenzinum | 
| Informatics | 
| Information | 
| Information Centers | 
| Information Disclosure use Disclosure | 
| Information Display use Data Display | 
| Information Dissemination | 
| Information Exchange | 
| Information Management | 
| Information Processing, Automatic use Automatic Data Processing | 
| Information Processing, Human use Mental Processes | 
| Information Products and Services | 
| Information Retrieval use Information Storage and Retrieval | 
| Information Retrieval Systems use Information Systems | 
| Information Science | 
| Information Services | 
| Information Society Indicators | 
| Information Storage and Retrieval | 
| Information Systems | 
| Information Technologies and Communication Projects | 
| Information Technology | 
| Information Theory | 
| Informed Consent | 
| Informed Consent Forms use Consent Forms | 
| Infrared Rays | 
| Infrared Spectrophotometry use Spectrophotometry, Infrared | 
| Infrastructure | 
| Infrastructure Projects | 
| Infratentorial Neoplasms | 
| Infratentorial Tumors use Infratentorial Neoplasms | 
| Infundibular Nucleus use Arcuate Nucleus | 
| Infundibular Stalk use Pituitary Gland, Posterior | 
| Infundibular Stem use Pituitary Gland, Posterior | 
| Infundibular Stenosis, Pulmonary use Pulmonary Subvalvular Stenosis | 
| Infundibulum (Hypophysis) use Pituitary Gland, Posterior | 
| Infundibulum, Hypophyseal use Pituitary Gland, Posterior | 
| Infusion Pumps | 
| Infusion Pumps, External use Infusion Pumps | 
| Infusion Pumps, Implantable | 
| Infusion Therapy, Home use Home Infusion Therapy | 
| Infusions, Intra-Arterial | 
| Infusions, Intra-Osseous use Infusions, Intraosseous | 
| Infusions, Intralesional | 
| Infusions, Intraosseous | 
| Infusions, Intravenous | 
| Infusions, Parenteral | 
| Infusions, Regional Arterial use Infusions, Intra-Arterial | 
| Infusorial Earth use Diatomaceous Earth | 
| Infusors use Infusion Pumps | 
| Inguinal Canal | 
| Inguinal Hernia use Hernia, Inguinal | 
| Inhalation | 
| Inhalation Anesthetics use Anesthetics, Inhalation | 
| Inhalation Burns use Burns, Inhalation | 
| Inhalation Devices use Nebulizers and Vaporizers | 
| Inhalation Drug Administration use Administration, Inhalation | 
| Inhalation Exposure | 
| Inhalation Injury, Smoke use Smoke Inhalation Injury | 
| Inhalation Provocation Tests use Bronchial Provocation Tests | 
| Inhalation Spacers | 
| Inhalation Therapy use Respiratory Therapy | 
| Inhalation of Drugs use Administration, Inhalation | 
| Inhalators use Nebulizers and Vaporizers | 
| Inhalers use Nebulizers and Vaporizers | 
| Inhalers, Metered Dose use Metered Dose Inhalers | 
| Inhaling use Inhalation | 
| Inheritance Patterns | 
| Inherited Coagulation Disorders use Blood Coagulation Disorders, Inherited | 
| Inhibin-beta Subunits | 
| Inhibins | 
| Inhibition (Psychology) | 
| Inhibition, Neural use Neural Inhibition | 
| Inhibitor of Apoptosis Proteins | 
| Inhibitor of Differentiation Protein 1 | 
| Inhibitor of Differentiation Protein 2 | 
| Inhibitor of Differentiation Proteins | 
| Inhibitory Concentration 50 | 
| Inhibitory Postsynaptic Potentials | 
| Inhibitory Smad Proteins use Smad Proteins, Inhibitory | 
| Initial Reconstruction and Return to Normality | 
| Initiation Factors use Peptide Initiation Factors | 
| Initiator Codon use Codon, Initiator | 
| Initiator tRNA use RNA, Transfer, Met | 
| Injections | 
| Injections, Endolymphatic use Injections, Intralymphatic | 
| Injections, Epidural | 
| Injections, Intra-Arterial | 
| Injections, Intra-Articular | 
| Injections, Intradermal | 
| Injections, Intralesional | 
| Injections, Intralymphatic | 
| Injections, Intramuscular | 
| Injections, Intraperitoneal | 
| Injections, Intraspinal use Injections, Spinal | 
| Injections, Intrathecal use Injections, Spinal | 
| Injections, Intravenous | 
| Injections, Intraventricular | 
| Injections, Jet | 
| Injections, Sclerosing use Sclerosing Solutions | 
| Injections, Sperm, Intracytoplasmic use Sperm Injections, Intracytoplasmic | 
| Injections, Spinal | 
| Injections, Subcutaneous | 
| Injuries use Wounds and Injuries | 
| Injuries, Multiple use Multiple Trauma | 
| Injuries, Nonpenetrating use Wounds, Nonpenetrating | 
| Injuries, Poisonings, and Occupational Diseases use Disorders of Environmental Origin | 
| Injury Severity Score | 
| Ink | 
| Ink Blot Tests | 
| Inlay Casting Wax | 
| Inlays | 
| Inlets use Stormwater Inlets | 
| Innate Behavior use Instinct | 
| Inner Cell Mass, Blastocyst use Blastocyst Inner Cell Mass | 
| Inner Ear Disease use Labyrinth Diseases | 
| Inner Mongolia use China | 
| Innominate Artery use Brachiocephalic Trunk | 
| Innominate Veins use Brachiocephalic Veins | 
| Innovation | 
| Innovation Diffusion use Diffusion of Innovation | 
| Innovation and Development Policy | 
| Innovator Drugs use Reference Drugs | 
| Inoculation Lymphoreticulosis use Cat-Scratch Disease | 
| Inorganic Acids | 
| Inorganic Carbon Compounds use Carbon Compounds, Inorganic | 
| Inorganic Chemicals | 
| Inorganic Chemistry use Chemistry, Inorganic | 
| Inorganic Particles | 
| Inorganic Pollutants | 
| Inorganic Pollutants in Foods use Food Pollutants, Inorganic | 
| Inorganic Pyrophosphatase | 
| Inorganic Substances use Inorganic Chemicals | 
| Inorganic Tracers | 
| Inosinate Phosphatase use 5'-Nucleotidase | 
| Inosine | 
| Inosine Cyclic 3',5'-Monophosphate use Cyclic IMP | 
| Inosine Diphosphate | 
| Inosine Monophosphate | 
| Inosine Nucleotides | 
| Inosine Phosphates use Inosine Nucleotides | 
| Inosine Phosphorylase use Purine-Nucleoside Phosphorylase | 
| Inosine Polynucleotides use Poly I | 
| Inosine Pranobex | 
| Inosine Triphosphate | 
| Inosinic Acid use Inosine Monophosphate | 
| Inosinic Acid Dehydrogenase use IMP Dehydrogenase | 
| Inosiplex use Inosine Pranobex | 
| Inositol | 
| Inositol 1,2-Cyclic Phosphate 2-Phosphohydrolase use Glycerophosphoinositol Inositolphosphodiesterase | 
| Inositol 1,4,5-Triphosphate use Inositol 1,4,5-Trisphosphate | 
| Inositol 1,4,5-Triphosphate Receptors use Inositol 1,4,5-Trisphosphate Receptors | 
| Inositol 1,4,5-Trisphosphate | 
| Inositol 1,4,5-Trisphosphate Receptors | 
| Inositol Cyclase use Myo-Inositol-1-Phosphate Synthase | 
| Inositol Hexaphosphate use Phytic Acid | 
| Inositol Oxygenase | 
| Inositol Phosphates | 
| Inositol Phosphoglycerides use Phosphatidylinositols | 
| Inositol-1-Phosphate Synthase use Myo-Inositol-1-Phosphate Synthase | 
| Inotropic Agents, Positive Cardiac use Cardiotonic Agents | 
| Inotropism use Muscle Contraction | 
| Inotropism, Cardiac use Myocardial Contraction | 
| Inoviridae | 
| Inovirus | 
| Inpatient Care Units | 
| Inpatients | 
| Insanity Defense | 
| Insect Bites and Stings | 
| Insect Control | 
| Insect Genes use Genes, Insect | 
| Insect Genome use Genome, Insect | 
| Insect Growth Regulators use Juvenile Hormones | 
| Insect Hormones | 
| Insect Parvoviruses use Densovirus | 
| Insect Proteins | 
| Insect Repellents | 
| Insect Vectors | 
| Insect Viruses | 
| Insecticide Resistance | 
| Insecticides | 
| Insecticides, Organochlorine | 
| Insecticides, Organophosphate | 
| Insecticides, Organophosphate, Antagonists use Cholinesterase Reactivators | 
| Insecticides, Organothiophosphate use Insecticides, Organophosphate | 
| Insecticides, Organothiophosphate, Antagonists use Cholinesterase Reactivators | 
| Insectivora | 
| Insects | 
| Insecure Labor Conditions use Occupational Risks | 
| Insemination | 
| Insemination, Artificial | 
| Insemination, Artificial, Heterologous | 
| Insemination, Artificial, Homologous | 
| Insemination, Artificial, Human Donor use Insemination, Artificial, Heterologous | 
| Insemination, Artificial, Husband use Insemination, Artificial, Homologous | 
| Insensitivity to Pain with Anhidrosis, Congenital use Hereditary Sensory and Autonomic Neuropathies | 
| Insertion Mutation use Mutagenesis, Insertional | 
| Insertion Sequence Elements use DNA Transposable Elements | 
| Insertional Activation use Mutagenesis, Insertional | 
| Insertional Mutagenesis use Mutagenesis, Insertional | 
| Inservice Training | 
| Insignia use Emblems and Insignia | 
| Insomnia use Sleep Initiation and Maintenance Disorders | 
| Insomnia, Fatal Familial | 
| Inspection Chambers use Inspection Manholes | 
| Inspection Manholes | 
| Inspiratory Capacity | 
| Inspiratory Positive-Pressure Breathing use Intermittent Positive-Pressure Breathing | 
| Inspiratory Positive-Pressure Ventilation use Intermittent Positive-Pressure Ventilation | 
| Inspiratory Reserve Volume | 
| Instability Indexes | 
| Instability, Joint use Joint Instability | 
| Installations for Disaster Victims | 
| Instillation, Bladder use Administration, Intravesical | 
| Instillation, Drug | 
| Instillation, Rectal use Administration, Rectal | 
| Instillation, Vaginal use Administration, Intravaginal | 
| Instinct | 
| Institute of Medicine (U.S.) | 
| Institutes use Academies and Institutes | 
| Institutional Adherence use Guideline Adherence | 
| Institutional Aspects use Institutional Development | 
| Institutional Development | 
| Institutional Ethics Committees use Ethics Committees | 
| Institutional Evaluation | 
| Institutional Feeding use Collective Feeding | 
| Institutional Liability use Liability, Legal | 
| Institutional Management Teams | 
| Institutional Organization | 
| Institutional Personnel Licensure use Licensure | 
| Institutional Policy use Organizational Policy | 
| Institutional Practice | 
| Institutional Review Boards use Ethics Committees, Research | 
| Institutional Tax use Taxes | 
| Institutionalization | 
| Institutionalized Adolescent use Adolescent, Institutionalized | 
| Institutionalized Adolescent Health use Health of Institutionalized Adolescents | 
| Institutionalized Child use Child, Institutionalized | 
| Institutionalized Child Health use Health of Institutionalized Children | 
| Institutionalized Elderly Health use Health of Institutionalized Elderly | 
| Institutionalized Population | 
| Institutions use Institutional Development | 
| Institutions and Organizations for Measurement | 
| Instruction | 
| Instructional Models use Models, Educational | 
| Instructional Technology use Educational Technology | 
| Instrumental Learning use Conditioning, Operant | 
| Instruments for Management of Scientific Activity | 
| Insufficient Sleep Syndrome use Sleep Deprivation | 
| Insufflation | 
| Insufflation Anesthesia use Anesthesia, Inhalation | 
| Insufflation Radiography use Pneumoradiography | 
| Insula of Reil use Cerebral Cortex | 
| Insulator Elements | 
| Insulin | 
| Insulin Antagonists | 
| Insulin Antibodies | 
| Insulin Coma | 
| Insulin Coma Therapy use Convulsive Therapy | 
| Insulin Infusion Systems | 
| Insulin Receptor use Receptor, Insulin | 
| Insulin Receptor Protein-Tyrosine Kinase use Receptor, Insulin | 
| Insulin Receptor alpha Subunit use Receptor, Insulin | 
| Insulin Receptor beta Subunit use Receptor, Insulin | 
| Insulin Resistance | 
| Insulin Resistance Syndrome X use Metabolic Syndrome X | 
| Insulin, Isophane | 
| Insulin, Long-Acting | 
| Insulin-Like Growth Factor Binding Protein 1 | 
| Insulin-Like Growth Factor Binding Protein 2 | 
| Insulin-Like Growth Factor Binding Protein 3 | 
| Insulin-Like Growth Factor Binding Protein 4 | 
| Insulin-Like Growth Factor Binding Protein 5 | 
| Insulin-Like Growth Factor Binding Protein 6 | 
| Insulin-Like Growth Factor Binding Proteins | 
| Insulin-Like Growth Factor I | 
| Insulin-Like Growth Factor II | 
| Insulin-Like Growth Factors use Somatomedins | 
| Insulin-Secreting Cells | 
| Insulinase use Insulysin | 
| Insulinoma | 
| Insulinum | 
| Insuloma use Insulinoma | 
| Insulysin | 
| Insurance | 
| Insurance Audit use Insurance Claim Review | 
| Insurance Benefits | 
| Insurance Carriers | 
| Insurance Case Management use Managed Care Programs | 
| Insurance Claim Reporting | 
| Insurance Claim Review | 
| Insurance Claims Processing use Insurance Claim Review | 
| Insurance Coverage | 
| Insurance Pools | 
| Insurance Selection Bias | 
| Insurance Status use Insurance Coverage | 
| Insurance, Accident | 
| Insurance, Dental | 
| Insurance, Disability | 
| Insurance, Health | 
| Insurance, Health, Catastrophic use Insurance, Major Medical | 
| Insurance, Health, Reimbursement | 
| Insurance, Health, for Aged and Disabled use Medicare | 
| Insurance, Hospitalization | 
| Insurance, Liability | 
| Insurance, Life | 
| Insurance, Long-Term Care | 
| Insurance, Major Medical | 
| Insurance, Medigap | 
| Insurance, Nursing Services | 
| Insurance, Pharmaceutical Services | 
| Insurance, Physician Services | 
| Insurance, Psychiatric | 
| Insurance, Surgical | 
| Insurers use Insurance Carriers | 
| Intake Works | 
| Integral Membrane Proteins use Membrane Proteins | 
| Integrase use Integrases | 
| Integrase Inhibitors | 
| Integrase Inhibitors, HIV use HIV Integrase Inhibitors | 
| Integrases | 
| Integrated Academic Information Management Systems use Integrated Advanced Information Management Systems | 
| Integrated Advanced Information Management Systems | 
| Integrated Delivery Systems use Delivery of Health Care, Integrated | 
| Integrated Health Care Systems use Delivery of Health Care, Integrated | 
| Integrated Management of Childhood Illness | 
| Integrated Management of Water Resources use Integrated Water Resource Management | 
| Integrated Water Resource Management | 
| Integration Host Factor use Integration Host Factors | 
| Integration Host Factors | 
| Integration, Prophage use Lysogeny | 
| Integration, Provirus use Virus Integration | 
| Integration, Virus use Virus Integration | 
| Integrin alpha Chains | 
| Integrin alpha1 | 
| Integrin alpha1beta1 | 
| Integrin alpha2 | 
| Integrin alpha2beta1 | 
| Integrin alpha3 | 
| Integrin alpha3beta1 | 
| Integrin alpha4 | 
| Integrin alpha4beta1 | 
| Integrin alpha5 | 
| Integrin alpha5beta1 | 
| Integrin alpha6 | 
| Integrin alpha6B use Integrin alpha6 | 
| Integrin alpha6beta1 | 
| Integrin alpha6beta4 | 
| Integrin alphaIIb use Platelet Membrane Glycoprotein IIb | 
| Integrin alphaIIbbeta3 use Platelet Glycoprotein GPIIb-IIIa Complex | 
| Integrin alphaM use Antigens, CD11b | 
| Integrin alphaMbeta2 use Macrophage-1 Antigen | 
| Integrin alphaV | 
| Integrin alphaVbeta3 | 
| Integrin alphaX use Antigens, CD11c | 
| Integrin alphaXbeta2 | 
| Integrin beta Chains | 
| Integrin beta1 use Antigens, CD29 | 
| Integrin beta2 use Antigens, CD18 | 
| Integrin beta3 | 
| Integrin beta3A use Integrin beta3 | 
| Integrin beta3B use Integrin beta3 | 
| Integrin beta3C use Integrin beta3 | 
| Integrin beta4 | 
| Integrins | 
| Integrons | 
| Integumentary System | 
| Inteins | 
| Intellectual Property | 
| Intellectual Property of Pharmaceutic Products and Process | 
| Intelligence | 
| Intelligence Tests | 
| Intensity, Macroseismic | 
| Intensive Care | 
| Intensive Care Units | 
| Intensive Care Units, Neonatal | 
| Intensive Care Units, Pediatric | 
| Intensive Care, Neonatal | 
| Intensive Care, Surgical use Intensive Care | 
| Intent | 
| Intention | 
| Intention Tremor use Tremor | 
| Inter-American Development Bank | 
| Interactive Tutorial | 
| Interagency Relations use Interinstitutional Relations | 
| Interbasin Transfer | 
| Intercalated Neurons use Interneurons | 
| Intercalating Agents | 
| Intercalators use Intercalating Agents | 
| Intercarpal Joints use Carpal Joints | 
| Intercellular Adhesion Molecule-1 | 
| Intercellular Adhesion Molecules use Cell Adhesion Molecules | 
| Intercellular Junctions | 
| Intercellular Signaling Peptides and Proteins | 
| Intercellular Space use Extracellular Space | 
| Intercepting Channels | 
| Intercepting Sewers | 
| Interchange of Drugs | 
| Intercostal Muscles | 
| Intercostal Nerves | 
| Intercrines use Chemokines | 
| Interdental Papilla use Gingiva | 
| Interdepartmental Relations | 
| Interdigitating Cells use Dendritic Cells | 
| Interdigitating Dendritic Cell Sarcoma use Dendritic Cell Sarcoma, Interdigitating | 
| Interdisciplinary Communication | 
| Interdisciplinary Health Team use Patient Care Team | 
| Interdisciplinary Research | 
| Interface, User Computer use User-Computer Interface | 
| Interfascicular Oligodendroglia use Oligodendroglia | 
| Interferometry | 
| Interferometry, Microscopic use Microscopy, Interference | 
| Interferon Alfa-2a | 
| Interferon Alfa-2b | 
| Interferon Alfa-2c | 
| Interferon Inducers | 
| Interferon Receptors use Receptors, Interferon | 
| Interferon Regulatory Factor-1 | 
| Interferon Regulatory Factor-2 | 
| Interferon Regulatory Factor-3 | 
| Interferon Regulatory Factor-7 | 
| Interferon Regulatory Factors | 
| Interferon Type I | 
| Interferon Type I, Recombinant | 
| Interferon Type II | 
| Interferon Type II, Recombinant use Interferon-gamma, Recombinant | 
| Interferon alfa use Interferon-alpha | 
| Interferon alfa, Recombinant use Interferon Type I, Recombinant | 
| Interferon alpha, Recombinant use Interferon Type I, Recombinant | 
| Interferon alpha-beta Receptor use Receptor, Interferon alpha-beta | 
| Interferon beta, Recombinant use Interferon Type I, Recombinant | 
| Interferon gamma-1b use Interferon-gamma, Recombinant | 
| Interferon gamma-2a use Interferon-gamma, Recombinant | 
| Interferon, Fibroblast use Interferon-beta | 
| Interferon, Immune use Interferon Type II | 
| Interferon, Leukocyte use Interferon-alpha | 
| Interferon, Lymphoblast use Interferon-alpha | 
| Interferon-Stimulated Gene Factor 3 | 
| Interferon-Stimulated Gene Factor 3, alpha Subunit | 
| Interferon-Stimulated Gene Factor 3, gamma Subunit | 
| Interferon-alpha | 
| Interferon-beta | 
| Interferon-gamma use Interferon Type II | 
| Interferon-gamma, Recombinant | 
| Interferon-gamma-Inducing Factor use Interleukin-18 | 
| Interferons | 
| Intergeneration Interval | 
| Intergenerational Relations | 
| Intergenic DNA use DNA, Intergenic | 
| Interinstitutional Relations | 
| Interior Design and Furnishings | 
| Interior Furnishings use Interior Design and Furnishings | 
| Interleukin 1 Receptor Antagonist Protein | 
| Interleukin 18 Receptors use Receptors, Interleukin-18 | 
| Interleukin Enhancer Binding Factor 2 use Nuclear Factor 45 Protein | 
| Interleukin Enhancer Binding Factor 3 use Nuclear Factor 90 Proteins | 
| Interleukin Receptor Common gamma Subunit | 
| Interleukin Receptors use Receptors, Interleukin | 
| Interleukin-1 | 
| Interleukin-1 Receptor Accessory Protein | 
| Interleukin-1 Receptor Type I use Receptors, Interleukin-1 Type I | 
| Interleukin-1 Receptor Type II use Receptors, Interleukin-1 Type II | 
| Interleukin-1 Receptor-Associated Kinases | 
| Interleukin-1 Receptors use Receptors, Interleukin-1 | 
| Interleukin-1 Receptors Type I use Receptors, Interleukin-1 Type I | 
| Interleukin-10 | 
| Interleukin-10 Receptor alpha Chain use Interleukin-10 Receptor alpha Subunit | 
| Interleukin-10 Receptor alpha Subunit | 
| Interleukin-10 Receptor beta Subunit | 
| Interleukin-10 Receptors use Receptors, Interleukin-10 | 
| Interleukin-11 | 
| Interleukin-11 Receptor alpha Subunit | 
| Interleukin-11 Receptors use Receptors, Interleukin-11 | 
| Interleukin-12 | 
| Interleukin-12 Receptor beta 1 Subunit | 
| Interleukin-12 Receptor beta 2 Subunit | 
| Interleukin-12 Receptors use Receptors, Interleukin-12 | 
| Interleukin-12 Subunit p35 | 
| Interleukin-12 Subunit p40 | 
| Interleukin-13 | 
| Interleukin-13 Receptor alpha1 Subunit | 
| Interleukin-13 Receptor alpha2 Subunit | 
| Interleukin-13 Receptors use Receptors, Interleukin-13 | 
| Interleukin-15 | 
| Interleukin-15 Receptor alpha Subunit | 
| Interleukin-15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit | 
| Interleukin-15 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
| Interleukin-15 Receptors use Receptors, Interleukin-15 | 
| Interleukin-16 | 
| Interleukin-16 Receptors use Receptors, Interleukin-16 | 
| Interleukin-17 | 
| Interleukin-17 Receptors use Receptors, Interleukin-17 | 
| Interleukin-18 | 
| Interleukin-18 Receptor alpha Subunit | 
| Interleukin-18 Receptor beta Subunit | 
| Interleukin-1alpha | 
| Interleukin-1beta | 
| Interleukin-1beta Converting Enzyme use Caspase 1 | 
| Interleukin-2 | 
| Interleukin-2 Receptor alpha Subunit | 
| Interleukin-2 Receptor beta Subunit | 
| Interleukin-2 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
| Interleukin-2 Receptors use Receptors, Interleukin-2 | 
| Interleukin-2 Receptors alpha use Interleukin-2 Receptor alpha Subunit | 
| Interleukin-2, 15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit | 
| Interleukin-21 Receptor alpha Subunit | 
| Interleukin-21 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
| Interleukin-21 Receptors use Receptors, Interleukin-21 | 
| Interleukin-23 | 
| Interleukin-23 Subunit p19 | 
| Interleukin-3 | 
| Interleukin-3 Receptor alpha Subunit | 
| Interleukin-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
| Interleukin-3 Receptors use Receptors, Interleukin-3 | 
| Interleukin-4 | 
| Interleukin-4 Receptor alpha Subunit | 
| Interleukin-4 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
| Interleukin-4 Receptors use Receptors, Interleukin-4 | 
| Interleukin-4 Receptors, Type I use Receptors, Interleukin-4, Type I | 
| Interleukin-4 Receptors, Type II use Receptors, Interleukin-4, Type II | 
| Interleukin-4, 13 Receptor Shared Subunit use Interleukin-13 Receptor alpha1 Subunit | 
| Interleukin-4, 13 Shared Receptor use Receptors, Interleukin-4, Type II | 
| Interleukin-5 | 
| Interleukin-5 Receptor alpha Subunit | 
| Interleukin-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
| Interleukin-5 Receptors use Receptors, Interleukin-5 | 
| Interleukin-6 | 
| Interleukin-6 Receptor alpha Subunit | 
| Interleukin-6 Receptors use Receptors, Interleukin-6 | 
| Interleukin-7 | 
| Interleukin-7 Receptor alpha Subunit | 
| Interleukin-7 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
| Interleukin-7 Receptors use Receptors, Interleukin-7 | 
| Interleukin-8 | 
| Interleukin-8 Receptors use Receptors, Interleukin-8 | 
| Interleukin-8A Receptors use Receptors, Interleukin-8A | 
| Interleukin-8B Receptors use Receptors, Interleukin-8B | 
| Interleukin-9 | 
| Interleukin-9 Receptors use Receptors, Interleukin-9 | 
| Interleukins | 
| Interlibrary Loans | 
| Intermediate Care Facilities | 
| Intermediate Filament Proteins | 
| Intermediate Filaments | 
| Intermediate Hypothalamic Region use Hypothalamus, Middle | 
| Intermediate Lobe of Pituitary use Pituitary Gland, Intermediate | 
| Intermediate Technology | 
| Intermediate-Conductance Calcium-Activated Potassium Channels | 
| Intermetatarsal Joint use Foot Joints | 
| Intermittent Claudication | 
| Intermittent Explosive Disorder use Impulse Control Disorders | 
| Intermittent Pneumatic Compression Devices | 
| Intermittent Positive-Pressure Breathing | 
| Intermittent Positive-Pressure Ventilation | 
| Intermittent Wetlands use Swamps | 
| Internal Advisory Committee on Research | 
| Internal Capsule | 
| Internal Carotid Artery Dissection use Carotid Artery, Internal, Dissection | 
| Internal Fixators | 
| Internal Hazard | 
| Internal Mammary Artery use Mammary Arteries | 
| Internal Mammary Artery Implantation use Myocardial Revascularization | 
| Internal Mammary-Coronary Artery Anastomosis | 
| Internal Mechanisms of Disasters Production | 
| Internal Medicine | 
| Internal Migration | 
| Internal Rules | 
| Internal Thoracic Artery use Mammary Arteries | 
| Internal-External Control | 
| International Acts | 
| International Agencies | 
| International Agreements | 
| International Assistance in Disaster | 
| International Bank for Reconstruction and Development | 
| International Certificate of Vaccination or Prophylaxis | 
| International Classification of Disabilities use International Classification of Functioning, Disability and Health | 
| International Classification of Diseases | 
| International Classification of Functioning, Disability and Health | 
| International Classification of Hazardous Goods | 
| International Commitments use International Acts | 
| International Conventions use International Acts | 
| International Cooperation | 
| International Council of Nurses | 
| International Declarations use International Acts | 
| International Development Research Centre | 
| International Educational Exchange | 
| International Health Problems use World Health | 
| International Humanitarian Law | 
| International Immunization Certificate use International Certificate of Vaccination or Prophylaxis | 
| International Law | 
| International Network of Information and Knowledge Sources for Sciences, Technology and Information Management | 
| International Non-Proprietary Name use International Nonproprietary Names for Pharmaceutical Substances | 
| International Non-Proprietary Names for Pharmaceutical Substances use International Nonproprietary Names for Pharmaceutical Substances | 
| International Nonproprietary Name use International Nonproprietary Names for Pharmaceutical Substances | 
| International Nonproprietary Names use International Nonproprietary Names for Pharmaceutical Substances | 
| International Nonproprietary Names for Pharmaceutical Substances | 
| International Normalized Ratio | 
| International Organization | 
| International Pacts use International Acts | 
| International Research Information System | 
| International Sanitary Regulation | 
| International Statistical Classification of Diseases and Related Health Problems use International Classification of Diseases | 
| International System of Units | 
| International Treaties use International Acts | 
| International Vaccination Certificate use International Certificate of Vaccination or Prophylaxis | 
| International Vaccination Certificate or Prophylaxis use International Certificate of Vaccination or Prophylaxis | 
| International Water | 
| International Water and Sanitation Decade | 
| Internationality | 
| Internet | 
| Interneurons | 
| Internment Units use Inpatient Care Units | 
| Internship and Residency | 
| Internship, Dental use Internship and Residency | 
| Internship, Nonmedical | 
| Internuclear Ophthalmoplegia use Ocular Motility Disorders | 
| Interobserver Variation use Observer Variation | 
| Interparental Conflict use Family Conflict | 
| Interpersonal Relations | 
| Interphalangeal Joint of Foot use Toe Joint | 
| Interphalangeal Joint of Hand use Finger Joint | 
| Interphalangeal Joints of Foot use Toe Joint | 
| Interphase | 
| Interplanetary Dust use Cosmic Dust | 
| Interprofessional Relations | 
| Interrelation | 
| Interrelation by Hazard | 
| Interrelation by Negative Effects | 
| Interrenal Gland | 
| Interruption of Services Supply | 
| Intersectorial Action | 
| Intersectorial Action for Health use Intersectorial Action | 
| Intersectorial Coordination use Intersectorial Action | 
| Intersexuality use Hermaphroditism | 
| Interspersed Repetitive Elements use Interspersed Repetitive Sequences | 
| Interspersed Repetitive Sequences | 
| Interstellar Dust use Cosmic Dust | 
| Interstitial Cell Tumor use Leydig Cell Tumor | 
| Interstitial Cell-Stimulating Hormone use Luteinizing Hormone | 
| Interstitial Cells, Testicular use Leydig Cells | 
| Interstitial Collagenase use Matrix Metalloproteinase 1 | 
| Interstitial Cystitis use Cystitis, Interstitial | 
| Interstitial Fluid use Extracellular Fluid | 
| Interstitial Lung Diseases use Lung Diseases, Interstitial | 
| Interstitial Nephritis use Nephritis, Interstitial | 
| Intertarsal Joint use Tarsal Joints | 
| Intertidal Zone | 
| Intertrigo | 
| Intertrochanteric Fractures use Hip Fractures | 
| Intertropical Convergence Zone | 
| Intervening Sequences use Introns | 
| Intervention Studies | 
| Interventional Magnetic Resonance Imaging use Magnetic Resonance Imaging, Interventional | 
| Intervertebral Disk | 
| Intervertebral Disk Chemolysis | 
| Intervertebral Disk Displacement | 
| Interview | 
| Interview, Psychological | 
| Interviewer Effect use Effect Modifiers (Epidemiology) | 
| Interviews as Topic | 
| Intestinal Absorption | 
| Intestinal Amebiasis use Dysentery, Amebic | 
| Intestinal Atresia | 
| Intestinal Biotherapics of Bach-Paterson use Bacillus Bach-Paterson | 
| Intestinal Bypass use Jejunoileal Bypass | 
| Intestinal Cancer use Intestinal Neoplasms | 
| Intestinal Contents use Gastrointestinal Contents | 
| Intestinal Diseases | 
| Intestinal Diseases, Parasitic | 
| Intestinal Epithelium use Intestinal Mucosa | 
| Intestinal Fistula | 
| Intestinal Hormone Receptors use Receptors, Gastrointestinal Hormone | 
| Intestinal Hormones use Gastrointestinal Hormones | 
| Intestinal L Cells use Enteroendocrine Cells | 
| Intestinal Motility use Gastrointestinal Motility | 
| Intestinal Mucosa | 
| Intestinal Neoplasms | 
| Intestinal Obstruction | 
| Intestinal Perforation | 
| Intestinal Polyposis | 
| Intestinal Polyps | 
| Intestinal Pseudo-Obstruction | 
| Intestinal Secretin Cells use Enteroendocrine Cells | 
| Intestinal Secretions | 
| Intestinal Volvulus | 
| Intestinal of Bach-Paterson use Bacillus Bach-Paterson | 
| Intestine, Large | 
| Intestine, Small | 
| Intestines | 
| Intoxication use Poisoning | 
| Intoxication, Alcoholic use Alcoholic Intoxication | 
| Intra-Abdominal Fat | 
| Intra-Abdominal Infusions use Infusions, Parenteral | 
| Intra-Aortic Balloon Pumping | 
| Intra-Arterial Lines use Catheters, Indwelling | 
| Intracellular Calcium-Sensing Proteins | 
| Intracellular Fluid | 
| Intracellular Membranes | 
| Intracellular Second Messengers use Second Messenger Systems | 
| Intracellular Signaling Peptides and Proteins | 
| Intracellular Space | 
| Intracerebral Hemorrhage use Cerebral Hemorrhage | 
| Intracerebral Hemorrhage, Hypertensive use Intracranial Hemorrhage, Hypertensive | 
| Intracerebral Hemorrhage, Traumatic use Cerebral Hemorrhage, Traumatic | 
| Intracerebral Pressure use Intracranial Pressure | 
| Intracisternal A-Particle Elements use Genes, Intracisternal A-Particle | 
| Intracisternal A-Particle Genes use Genes, Intracisternal A-Particle | 
| Intracoronal Attachment use Denture Precision Attachment | 
| Intracranial Aneurysm | 
| Intracranial Arterial Diseases | 
| Intracranial Arteriosclerosis | 
| Intracranial Arteriovenous Malformations | 
| Intracranial Arteriovenous Malformations, Congenital use Intracranial Arteriovenous Malformations | 
| Intracranial Atherosclerosis use Intracranial Arteriosclerosis | 
| Intracranial Central Nervous System Disorders use Brain Diseases | 
| Intracranial Edema use Brain Edema | 
| Intracranial Embolism | 
| Intracranial Embolism and Thrombosis | 
| Intracranial Gas use Pneumocephalus | 
| Intracranial Hemorrhage, Hypertensive | 
| Intracranial Hemorrhage, Traumatic | 
| Intracranial Hemorrhages | 
| Intracranial Hypertension | 
| Intracranial Hypotension | 
| Intracranial Hypotension, Essential use Intracranial Hypotension | 
| Intracranial Hypotension, Secondary use Intracranial Hypotension | 
| Intracranial Hypotension, Spontaneous use Intracranial Hypotension | 
| Intracranial Meningeal Neoplasms use Meningeal Neoplasms | 
| Intracranial Pressure | 
| Intracranial Sinus Thrombophlebitis use Sinus Thrombosis, Intracranial | 
| Intracranial Subdural Hematoma use Hematoma, Subdural, Intracranial | 
| Intracranial Thrombosis | 
| Intracranial Toxoplasmosis use Toxoplasmosis, Cerebral | 
| Intracranial Tuberculoma use Tuberculoma, Intracranial | 
| Intracranial Vascular Disorders use Cerebrovascular Disorders | 
| Intracranial Vasospasm use Vasospasm, Intracranial | 
| Intracytoplasmic Sperm Injections use Sperm Injections, Intracytoplasmic | 
| Intradermal Tests | 
| Intradural-Extramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms | 
| Intrahepatic Cholestasis use Cholestasis, Intrahepatic | 
| Intralaminar Nuclear Group use Intralaminar Thalamic Nuclei | 
| Intralaminar Thalamic Nuclei | 
| Intramedullary Nailing use Fracture Fixation, Intramedullary | 
| Intramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms | 
| Intramolecular Lyases | 
| Intramolecular Oxidoreductases | 
| Intramolecular Transferases | 
| Intranets use Computer Communication Networks | 
| Intranuclear Inclusion Bodies | 
| Intranuclear Space | 
| Intraobserver Variation use Observer Variation | 
| Intraocular Fluid use Aqueous Humor | 
| Intraocular Pressure | 
| Intraoperative Care | 
| Intraoperative Complications | 
| Intraoperative Monitoring use Monitoring, Intraoperative | 
| Intraoperative Period | 
| Intraosseous Ganglion use Bone Cysts | 
| Intraperitoneal Infusions use Infusions, Parenteral | 
| Intraspinal Injections use Injections, Spinal | 
| Intrathecal Injections use Injections, Spinal | 
| Intrauterine Cross-Transfusion use Fetofetal Transfusion | 
| Intrauterine Device Expulsion | 
| Intrauterine Devices | 
| Intrauterine Devices, Copper | 
| Intrauterine Devices, Medicated | 
| Intrauterine Diagnosis use Prenatal Diagnosis | 
| Intrauterine Growth Retardation use Fetal Growth Retardation | 
| Intrauterine Transfusion use Blood Transfusion, Intrauterine | 
| Intravaginal Administration use Administration, Intravaginal | 
| Intravenous Anesthetics use Anesthetics, Intravenous | 
| Intravenous Antibodies use Immunoglobulins, Intravenous | 
| Intravenous Drip use Infusions, Intravenous | 
| Intravenous Drug Abuse use Substance Abuse, Intravenous | 
| Intravenous Drug Delivery Systems use Infusion Pumps | 
| Intravenous Feeding use Parenteral Nutrition | 
| Intravenous Hyperalimentation use Parenteral Nutrition, Total | 
| Intravenous Immunoglobulins use Immunoglobulins, Intravenous | 
| Intravenous Infusions use Infusions, Intravenous | 
| Intraventricular Neoplasms use Cerebral Ventricle Neoplasms | 
| Intravesical Drug Administration use Administration, Intravesical | 
| Intrinsic Factor | 
| Intrinsic Sleep Disorders use Sleep Disorders, Intrinsic | 
| Introductory Journal Article | 
| Introns | 
| Introns, Protein use Inteins | 
| Introversion (Psychology) | 
| Intubation | 
| Intubation, Endotracheal use Intubation, Intratracheal | 
| Intubation, Gastrointestinal | 
| Intubation, Intratracheal | 
| Intubation, Nasogastric use Intubation, Gastrointestinal | 
| Intuition | 
| Intussusception | 
| Inuits | 
| Inula | 
| Inula helenium | 
| Inulin | 
| Inupiats use Inuits | 
| Inv Allotypes use Immunoglobulin Km Allotypes | 
| Invagination, Intestinal use Intussusception | 
| Invasion of Deaths | 
| Invasive Mole use Hydatidiform Mole, Invasive | 
| Invasiveness, Neoplasm use Neoplasm Invasiveness | 
| Inventories use Census | 
| Inventories, Hospital | 
| Inverse PCR use Polymerase Chain Reaction | 
| Inversion, Chromosome | 
| Invertebrate Ganglia use Ganglia, Invertebrate | 
| Invertebrate Hormones | 
| Invertebrate Peptide Receptors use Receptors, Invertebrate Peptide | 
| Invertebrate Photoreceptors use Photoreceptors, Invertebrate | 
| Invertebrates | 
| Inverted Repeat Sequence use Repetitive Sequences, Nucleic Acid | 
| Inverted Terminal Repeat use Terminal Repeat Sequences | 
| Investigation of Disease Outbreaks use Disease Outbreaks | 
| Investigational New Drug Application | 
| Investigational New Drugs use Drugs, Investigational | 
| Investigational Therapies use Therapies, Investigational | 
| Investigative Techniques | 
| Investments | 
| Investments in Health use Investments | 
| Involuntary Commitment use Commitment of Mentally Ill | 
| Involuntary Movements use Dyskinesias | 
| Inward Rectifier Potassium Channels use Potassium Channels, Inwardly Rectifying | 
| Io use Jupiter | 
| Iobenguane use 3-Iodobenzylguanidine | 
| Iodamide | 
| Iodamoebiasis use Amebiasis | 
| Iodates | 
| Iodide Peroxidase | 
| Iodides | 
| Iodinase use Iodide Peroxidase | 
| Iodinated Hydrocarbons use Hydrocarbons, Iodinated | 
| Iodination use Halogenation | 
| Iodination (Environmental Health) | 
| Iodine | 
| Iodine Compounds | 
| Iodine Deficiency | 
| Iodine Disinfection use Iodination (Environmental Health) | 
| Iodine Isotopes | 
| Iodine Radioisotopes | 
| Iodine-123-IMP use Iofetamine | 
| Iodipamide | 
| Iodium Purum | 
| Iodized Oil | 
| Iodoacetamide | 
| Iodoacetate use Iodoacetates | 
| Iodoacetates | 
| Iodoacetic Acid | 
| Iodobenzenes | 
| Iodobenzoates | 
| Iodobenzoylglycine use Iodohippuric Acid | 
| Iodochlorhydroxyquin use Clioquinol | 
| Iodochloroxyquinoline use Clioquinol | 
| Iodocyanopindolol | 
| Iododeoxyuridine use Idoxuridine | 
| Iodoformium | 
| Iodogorgoic Acid use Diiodotyrosine | 
| Iodohippuric Acid | 
| Iodopanoic Acid use Iopanoic Acid | 
| Iodophors | 
| Iodoproteins | 
| Iodopyracet | 
| Iodopyridones | 
| Iodoquinol | 
| Iodothyrinum use Thyreoidinum | 
| Iodothyronine 5'-Deiodinase use Iodide Peroxidase | 
| Iodothyronine Deiodinase use Iodide Peroxidase | 
| Iodotyrosine use Monoiodotyrosine | 
| Iodotyrosine Deiodase use Iodide Peroxidase | 
| Iofetamine | 
| Ioglycamic Acid | 
| Ioglycamide use Ioglycamic Acid | 
| Iohexol | 
| Ion Channel Gating | 
| Ion Channels | 
| Ion Channels, Calcium use Calcium Channels | 
| Ion Channels, Chloride use Chloride Channels | 
| Ion Channels, Potassium use Potassium Channels | 
| Ion Channels, Sodium use Sodium Channels | 
| Ion Cotransport use Ion Transport | 
| Ion Exchange | 
| Ion Exchange Resins | 
| Ion Exchange, Intracellular use Ion Transport | 
| Ion Pumps | 
| Ion Transfer use Ion Exchange | 
| Ion Transport | 
| Ion-Selective Electrodes | 
| Ionic Liquids | 
| Ionic Strength use Osmolar Concentration | 
| Ionomycin | 
| Ionophores | 
| Ionosphere | 
| Ionospheric Sounding | 
| Ions | 
| Ions, Heavy use Heavy Ions | 
| Iontophoresis | 
| Iopamidol | 
| Iopanoic Acid | 
| Iophendylate | 
| Iopodate use Ipodate | 
| Iostephane use Asteraceae | 
| Iotalamate Meglumine use Iothalamate Meglumine | 
| Iotalamic Acid use Iothalamic Acid | 
| Iothalamate Meglumine | 
| Iothalamic Acid | 
| Iothalamic Acid Methylglucamine use Iothalamate Meglumine | 
| Iowa | 
| Ioxaglate use Ioxaglic Acid | 
| Ioxaglate Meglumine use Ioxaglic Acid | 
| Ioxaglate Sodium use Ioxaglic Acid | 
| Ioxaglic Acid | 
| Ipecac | 
| Ipecacuanha | 
| Ipecine use Emetine | 
| Ipodate | 
| Ipomoea | 
| Ipomoea batatas | 
| Ipomoea nil | 
| Ipomoea purga use Jalapa | 
| Ipomoea purpurea | 
| Ipomovirus use Potyviridae | 
| Ipratropium | 
| Iprindole | 
| Iproniazid | 
| Ipronidazole | 
| Iproveratril use Verapamil | 
| Ir Genes use Genes, MHC Class II | 
| Iran | 
| Iraq | 
| Iraq War, 2003 - | 
| Ireland | 
| Ireland, Republic of use Ireland | 
| Irian Jaya use Indonesia | 
| Iridaceae | 
| Iridectomy | 
| Iridium | 
| Iridium Metallicum | 
| Iridium Muriaticum | 
| Iridium Radioisotopes | 
| Iridocyclitis | 
| Iridoids | 
| Iridology | 
| Iridoviridae | 
| Iridovirus | 
| Iris | 
| Iris Diseases | 
| Iris Neoplasms | 
| Iris Plant | 
| Iris factissima | 
| Iris florentina | 
| Iris foetidissima | 
| Iris germanica | 
| Iris pseudacorus | 
| Iris tenax | 
| Iris versicolor | 
| Irish Free State use Ireland | 
| Iritis | 
| Iron | 
| Iron Bacteria | 
| Iron Carbonyl Compounds | 
| Iron Chelates use Iron Chelating Agents | 
| Iron Chelating Agents | 
| Iron Compounds | 
| Iron Deficiency | 
| Iron Isotopes | 
| Iron Metabolism Disorders | 
| Iron Overload | 
| Iron Pipes | 
| Iron Proteins, Non-Heme use Nonheme Iron Proteins | 
| Iron Radioisotopes | 
| Iron Regulatory Factor use Iron-Regulatory Proteins | 
| Iron Regulatory Protein 1 | 
| Iron Regulatory Protein 2 | 
| Iron Salts | 
| Iron, Dietary | 
| Iron-Binding Proteins | 
| Iron-Deficiency Anemia use Anemia, Iron-Deficiency | 
| Iron-Dextran Complex | 
| Iron-Regulatory Proteins | 
| Iron-Sulfur Protein Reductase use Ferredoxin-NADP Reductase | 
| Iron-Sulfur Proteins | 
| Ironwort use Sideritis | 
| Irradiation, Half-Body use Hemibody Irradiation | 
| Irradiation, Hemibody use Hemibody Irradiation | 
| Irrawaddy River Dolphin use Dolphins | 
| Irrigation | 
| Irrigation (Agriculture) | 
| Irrigation Channels | 
| Irrigation Water use Irrigation (Agriculture) | 
| Irrigation, Gastric use Gastric Lavage | 
| Irrigation, Peritoneal use Peritoneal Lavage | 
| Irritable Bowel Syndrome | 
| Irritable Mood | 
| Irritant Dermatitis use Dermatitis, Irritant | 
| Irritants | 
| Irritating Gases | 
| Isaacs Syndrome | 
| Isatin | 
| Isatis | 
| Isavirus | 
| Ischemia | 
| Ischemia, Myocardial use Myocardial Ischemia | 
| Ischemia-Anoxia, Brain use Hypoxia-Ischemia, Brain | 
| Ischemia-Anoxia, Cerebral use Hypoxia-Ischemia, Brain | 
| Ischemia-Hypoxia, Brain use Hypoxia-Ischemia, Brain | 
| Ischemia-Hypoxia, Cerebral use Hypoxia-Ischemia, Brain | 
| Ischemia-Reperfusion Injury use Reperfusion Injury | 
| Ischemic Attack, Transient | 
| Ischemic Colitis use Colitis, Ischemic | 
| Ischemic Contracture | 
| Ischemic Encephalopathy use Brain Ischemia | 
| Ischemic Heart Disease use Myocardial Ischemia | 
| Ischemic Optic Neuropathy use Optic Neuropathy, Ischemic | 
| Ischemic Preconditioning | 
| Ischemic Preconditioning, Myocardial | 
| Ischemic-Hypoxic Encephalopathy use Hypoxia-Ischemia, Brain | 
| Ischium | 
| Ischnocera use Mallophaga | 
| Isertia use Rubiaceae | 
| Isethionic Acid | 
| Islam | 
| Island Flaps use Surgical Flaps | 
| Islands of Calleja | 
| Islands of Langerhans use Islets of Langerhans | 
| Isle of Man use Great Britain | 
| Islet Cell Tumor use Adenoma, Islet Cell | 
| Islet Cell Tumor, Malignant use Carcinoma, Islet Cell | 
| Islet Cell Tumor, Ulcerogenic use Gastrinoma | 
| Islet Cells use Islets of Langerhans | 
| Islet-Activating Protein use Pertussis Toxin | 
| Islets of Langerhans | 
| Islets of Langerhans Transplantation | 
| Iso-OMPA use Tetraisopropylpyrophosphamide | 
| Isoamylase | 
| Isoantibodies | 
| Isoantigens | 
| Isoaspartic Acid | 
| Isobamate use Carisoprodol | 
| Isobar | 
| Isobutanes use Butanes | 
| Isobutrazine use Trimeprazine | 
| Isobutylcyanoacrylate use Bucrylate | 
| Isobutyltheophylline use 1-Methyl-3-isobutylxanthine | 
| Isocarboxazid | 
| Isochores | 
| Isochromosomes | 
| Isocitrase use Isocitrate Lyase | 
| Isocitratase use Isocitrate Lyase | 
| Isocitrate Dehydrogenase | 
| Isocitrate Hydro-Lyase use Aconitate Hydratase | 
| Isocitrate Lyase | 
| Isocitrates | 
| Isocoumarins | 
| Isocyanates | 
| Isocyanides use Cyanides | 
| Isodesmosine | 
| Isodon | 
| Isoelectric Focusing | 
| Isoelectric Focusing Agents use Ampholyte Mixtures | 
| Isoelectric Point | 
| Isoenzymes | 
| Isoephedrine use Pseudoephedrine | 
| Isoetharine | 
| Isoetretin use Acitretin | 
| Isoflavones | 
| Isoflurane | 
| Isoflurophate | 
| Isoforms use Protein Isoforms | 
| Isofosfamide use Ifosfamide | 
| Isograft use Transplantation, Isogeneic | 
| Isogram | 
| Isohemagglutinins use Hemagglutinins | 
| Isoheptanes use Heptanes | 
| Isohexanes use Hexanes | 
| Isohyet | 
| Isoimmunization, Rhesus use Rh Isoimmunization | 
| Isoindoles | 
| Isolated Population use Suburban Population | 
| Isolation, Patient use Patient Isolation | 
| Isolation, Social use Social Isolation | 
| Isolectins use Lectins | 
| Isoleucine | 
| Isoleucine-Specific tRNA use RNA, Transfer, Ile | 
| Isoleucine-tRNA Ligase | 
| Isoleucyl T RNA Synthetase use Isoleucine-tRNA Ligase | 
| Isomaltase use Oligo-1,6-Glucosidase | 
| Isomaltose | 
| Isomeprobamate use Carisoprodol | 
| Isomerases | 
| Isomerases, cis-trans use cis-trans-Isomerases | 
| Isomerism | 
| Isometric Contraction | 
| Isometric Exercise use Exercise | 
| Isoniazid | 
| Isonicotinic Acid Hydrazide use Isoniazid | 
| Isonicotinic Acids | 
| Isonipecain use Meperidine | 
| Isonipecotic Acids | 
| Isonymy use Names | 
| Isooctanes use Octanes | 
| Isopathy use Isotherapy | 
| Isopentanes use Pentanes | 
| Isopentenyladenosine | 
| Isophenylephrine use Metaraminol | 
| Isophosphamide use Ifosfamide | 
| Isopoda | 
| Isopregnenone use Dydrogesterone | 
| Isoprenaline use Isoproterenol | 
| Isoprenoid Phosphate Monosaccharides use Polyisoprenyl Phosphate Monosaccharides | 
| Isoprenoid Phosphate Oligosaccharides use Polyisoprenyl Phosphate Oligosaccharides | 
| Isoprenoid Phosphate Sugars use Polyisoprenyl Phosphate Sugars | 
| Isoprenoid Phosphates use Polyisoprenyl Phosphates | 
| Isoprenylation use Prenylation | 
| Isopromedol use Promedol | 
| Isopropanol use 2-Propanol | 
| Isopropyl Alcohol use 2-Propanol | 
| Isopropyl Thiogalactoside | 
| Isopropylarterenol use Isoproterenol | 
| Isopropylmeprobamate use Carisoprodol | 
| Isopropylphenyladenosine use Phenylisopropyladenosine | 
| Isoprostanes | 
| Isoproterenol | 
| Isoptera | 
| Isopyrum use Ranunculaceae | 
| Isoquinolines | 
| Isoseismal | 
| Isosorbide | 
| Isosorbide Dinitrate | 
| Isospora | 
| Isosporiasis | 
| Isotach | 
| Isotachophoresis use Electrophoresis | 
| Isotherapy | 
| Isotherm | 
| Isothiocyanates | 
| Isothiuronium | 
| Isotonic Contraction | 
| Isotonic Drinks use Foods for Persons Engaged in Physical Activities | 
| Isotonic Solutions | 
| Isotope Labeling | 
| Isotopes | 
| Isotretinoin | 
| Isotype Switching use Immunoglobulin Class Switching | 
| Isovaleryl-CoA Dehydrogenase | 
| Isoxazoles | 
| Isoxsuprine | 
| Isozymes use Isoenzymes | 
| Ispaghula use Psyllium | 
| Isradipine | 
| Israel | 
| Itai-Itai use Cadmium Poisoning | 
| Italian Millet use Setaria Plant | 
| Italy | 
| Itching use Pruritus | 
| Itcz use Intertropical Convergence Zone | 
| Iteravirus use Densovirinae | 
| Ithyphallus impudicus use Phallus impudicus | 
| Ito Syndrome use Pigmentation Disorders | 
| Itraconazole | 
| Itu | 
| Ivermectin | 
| Ivory Coast use Cote d'Ivoire | 
| Ivy Gourd use Cucurbitaceae | 
| Ivy Method use Bleeding Time | 
| Ivy, English use Hedera | 
| Ivy, Poison use Toxicodendron | 
| Ixodes | 
| Ixodes dammini use Ixodes | 
| Ixodes persulcatus use Ixodes | 
| Ixodes ricinus use Ixodes | 
| Ixodes scapularis use Ixodes | 
| Ixodida use Ticks | 
| Ixodidae |