DECS 2001 - Deleted terms
| Deleted term | Concept absorbed by |
| AET | BETA-AMINOETHYL ISOTHIOUREA |
| ALTHESIN | ALFAXALONE ALFADOLONE MIXTURE |
| APROCARB | PROPOXUR |
| CHOLERA VACCINE | CHOLERA VACCINES |
| CREATINE KINASE ISOENZYMES | CREATINE KINASE |
| DIDS | 4,4'-DIISOTHIOCYANOSTILBENE-2,2'-DISULFONIC ACID |
| DOM | 2,5-DIMETHOXY-4-METHYLAMPHETAMINE |
| EIMERIINA | EIMERIIDA |
| EPN | PHENYLPHOSPHONOTHIOIC ACID, 2-ETHYL 2-(4-NITROPHENYL) ESTER |
| GENE TRANSFER | GENE TRANSFER TECHNIQUES |
| HAEMOSPORINA | HAEMOSPORIDA |
| LACTATE DEHYDROGENASE ISOENZYMES | LACTATE DEHYDROGENASE |
| POLIOVIRUS VACCINE | POLIOVIRUS VACCINE, INACTIVATED |
| PREGNANCY IN DIABETES | PREGNANCY IN DIABETICS |
| RABIES VACCINE | RABIES VACCINES |
| SIGNAL PEPTIDES | PROTEIN SORTING SIGNALS |
| SITS | 4-ACETAMIDO-4'-ISOTHIOCYANATOSTILBENE-2,2'-DISULFONIC ACID |
| SPOROZOEA | APICOMPLEXA |
| SPOROZOEA INFECTIONS | PROTOZOAN INFECTIONS |
| TYPHOID | TYPHOID FEVER |