Source:http://linkedlifedata.com/resource/umls/id/C0015502
MSH: Heat- and storage-stable plasma protein that is activated by tissue thromboplastin to form factor VIIa in the extrinsic pathway of blood coagulation. The activated form then catalyzes the activation of factor X to factor Xa.,NCI: A clotting factor found in the serum. It combines with tissue factor (factor III) to activate factor X in the clotting pathway.