the serine protease trypsin mimics these actions in a dose-dependent fashion , whereas the proteolytically inactive thrombin derivatives diisopropyl fluorophosphate-thrombin ( dip-thrombin ) and d-phenylalanyl-l-prolyl-l-arginine chloromethyl ketone-thrombin ( ppack-thrombin ) are ineffective in this regard .
C0036734
serine protease
C0041236
trypsin