Heparin.
D055598:Chemical Phenomena; D002621:Chemistry; D005170:Factor X / Q000037:antagonists & inhibitors; D006470:Hemorrhage / Q000139:chemically induced; D006493:Heparin / Q000097:blood / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D008970:Molecular Weight; D010314:Partial Thromboplastin Time; D013921:Thrombocytopenia / Q000139:chemically induced; D013924:Thrombophlebitis / Q000188:drug therapy; D013927:Thrombosis / Q000188:drug therapy*
D005170:Factor X; D006493:Heparin