| AChE | acetylcholinesterase |
| BChE | butyrylcholinesterase |
| MAO | monoamine oxidase |
| ACE | angiotensin I converting enzyme |
| NEP | neutral endopeptidase |
| ECE | endothelin converting enzyme I |
| AChE | acetylcholinesterase |
| BChE | butyrylcholinesterase |
| MAO | monoamine oxidase |
| ACE | angiotensin I converting enzyme |
| NEP | neutral endopeptidase |
| ECE | endothelin converting enzyme I |