The inhibition of the intrinsic generation of activated factor X by heparin and hirudin.
D000818:Animals; D000990:Antithrombin III; D002118:Calcium / Q000494:pharmacology; D002417:Cattle; D005170:Factor X / Q000096:biosynthesis*; D006493:Heparin / Q000494:pharmacology*; D006629:Hirudins / Q000494:pharmacology*; D006801:Humans; D010743:Phospholipids / Q000494:pharmacology; D013917:Thrombin / Q000494:pharmacology; D013997:Time Factors
D006629:Hirudins; D010743:Phospholipids; D000990:Antithrombin III; D005170:Factor X; D006493:Heparin; D013917:Thrombin; D002118:Calcium