The antithrombin activity of heparin.
D001780:Blood Coagulation Tests; D006493:Heparin / Q000494:pharmacology*; D006801:Humans; D013917:Thrombin / Q000037:antagonists & inhibitors*
D006493:Heparin; D013917:Thrombin
HEPARIN/effects; THROMBIN/antagonists