| ACE | Angiotensin Converting Enzyme | In English | → Cardiology |
| ADA | Adenosine Deaminase | In English | → Genetics |
| ADAMTS | A Disintegrin-like And Metalloprotease with Thrombospondin (type 1) | In English | |
| ATGL | Adipose Triglyceride Lipase | In English | |
| CHD | Chromodomain Helicase DNA (binding protein) | In English | → Genetics |
| ELISA | Enzyme Linked Immunosorbent Assay | In English | |
| H5N1 | Hämagglutinin 5 Neuraminidase 1 | In German | → Pathology |
| HDAC | Histone deacetylase | In English | → Genetics |
| HOA | Hydroxylamine-oxydoreductase | In English | |
| HSL | Hormonsensitive Lipase | In English | |
| JAK | Janus Kinase | In English | |
| LDH | Lactate Dehydrogenase | In English | |
| MAPK | Mitogen-Activated Protein Kinase | In English | |
| MCME | Methods: A Companion to Methods in Enzymology | In English | → Serial publications, periodicals |
| MnSOD | Manganese Superoxyde Dismutase | In English | |
| PAI | Plasminogen Activator Inhibitor | In English | → Blood and circulatory system |
| PAL | Phosphatase Alcaline Leucocytaire | In French | → Blood and circulatory system |
| PLK | Polo-like Kinase | In English | |
| RT | Reverse Transcriptase | In English | → Genetics |
| RT | Reverse Transcriptase | In English | → Genetics |
| RTK | Receptor Tyrosine Kinase | In English | |
| RUBISCO | Ribulose Bisphosphate Carboxylase/Oxygenase | In English | |
| SBE | Starch-Branching Enzyme | In English | |
| TERT | Telomerase Reverse Transcriptase | In English | → Genetics |
| TPA | Tissue Plasminogen Activator | In English | → Blood and circulatory system |
| UCH | Ubiquitin Carboxy-terminal Hydrolase | In English |