Normal human plasma contains a naturally occurring antagonist of activated factor X inhibitor (antithrombin III) activity.
D000990:Antithrombin III / Q000494:pharmacology*; D005170:Factor X / Q000037:antagonists & inhibitors*; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D010977:Platelet Factor 3; D010978:Platelet Factor 4; D013917:Thrombin / Q000037:antagonists & inhibitors
D010977:Platelet Factor 3; D010978:Platelet Factor 4; D000990:Antithrombin III; D005170:Factor X; D006493:Heparin; D013917:Thrombin