Anticoagulant action of heparin.
D000991:Antithrombins / Q000494:pharmacology; D001777:Blood Coagulation / Q000187:drug effects*; D004347:Drug Interactions; D005172:Factor XI / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D006493:Heparin / Q000494:pharmacology*; D006801:Humans; D066298:In Vitro Techniques
D000991:Antithrombins; D006493:Heparin; D005172:Factor XI