| ACE | angiotensin-I converting enzyme |
| Arg-CP | arginine carboxypeptidase |
| B1R | bradykinin B1 receptor |
| B2R | bradykinin B2 receptor |
| BK | bradykinin |
| C1-INH | C1-esterase inhibitor |
| EC50 | half maximal effective concentration |
| Emax | maximal effect |
| F12 | gene encoding factor XII |
| FXII | coagulation factor XII |
| GPCR | G protein coupled receptor |
| HAE | hereditary angioedema |
| HK | high molecular weight kininogen |
| IL-1 | interleukin-1 |
| KKS | kallikrein-kinin system |
| KLK-1 | tissue kallikrein |
| KLK1 | gene encoding tissue kallikrein |
| KLKB-1 | gene encoding plasma prekallikrein |
| KNG1 | gene encoding kininogens |
| LC-MS | liquid chromatography–mass spectrometry |
| LK | low molecular weight kininogen |
| Lys-BK | lysyl-bradykinin, kallidin |
| pA2 | a measure of affinity of the antagonist for its receptor |
| PLG | gene encoding plasminogen |
| s.e.m. | standard error of the mean |
| SERPINA4 | gene encoding kallistatin |
| SERPING1 | gene encoding C1-INH |
| TNF-α | tumor necrosis factor-α |
| vWF | Von Willebrand factor |