A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, or an interventional cardiologist involving extraction of sample cells or tissues for examination to determine the presence or extent of a disease. The tissue is generally examined under a microscope by a pathologist, and can also be analyzed chemically.
in fibrin. ...from fibrinogen, a soluble protein that is produced by the liver and found in blood plasma. When tissue damage results in bleeding, fibrinogen is converted at the wound into fibrin by the action of thrombin, a clotting enzyme.
[thromâ²bin]. an enzyme formed from prothrombin, calcium, and thromboplastin in plasma during the clotting process. Thrombin causes fibrinogen to change to fibrin, which is essential in the formation of a clot.Also called factor IIa. See also blood clot, prothrombin. Hematology A key clot promoting enzyme that converts fibrinogen to fibrin and protects against fibrinolysis by activating thrombin-activatable fibrinolysis inhibitor.thromâ²bin]. an enzyme formed from prothrombin, calcium, and thromboplastin in plasma during the clotting process. Thrombin causes fibrinogen to change to fibrin, which is essential in the formation of a clot.