| D - Chemicals and Drugs 
 | Deleted term |  | Concept absorbed by | 
 
 | 
| D08 - Enzymes and Coenzymes 
 D12 - Amino Acids, Peptides, and Proteins
 
 D23 - Biological Factors
 
 D27 - Chemical Actions and Uses
 
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| E - Analytical, Diagnostic and Therapeutic Techniques and Equipment 
 | Deleted term |  | Concept absorbed by | 
 
 | 
| E01 - Diagnosis 
 E05 - Investigative Techniques
 
   | 
| SP - Public Health 
 | Deleted term |  | Concept absorbed by | 
 
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| SP4 - Environmental Health 
   | 
| VS - Health Surveillance 
 | Deleted term |  | Concept absorbed by | 
 
 | 
| VS2 - Health Surveillance of Products 
 VS3 - Health Surveillance of Health Services
 
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