found: Inter. dict. med. biol.(thromboplastin: the substance that causes conversino of prothrombin to thrombin in the presence of calcium. Also called factor III.)
found: MESH browser, Mar. 14, 2006(Thromboplastin, entry terms: Coagulation Factor III, Factor III, Blood Coagulation Factor III, Tissue Factor, Tissue Thromboplastin. Scope note: Constituent composed of protein and phospholipid that is widely distributed in many tissues. It serves as a cofactor with factor VIIa to activate factor X in the extrinsic pathway of blood coagulation.)
found: Wikipedia, Mar. 15, 2006(Thromboplastin (also called Tissue Factor) is a substance present in endothelial tissue, platelets, and leukocytes necessary for the initiation of thrombin formation from zymogen prothrombin. Tissue thromboplastin (factor III) interacts with activated factor VII and calcium to activate factor X.)
