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.
A complex known as a prothrombin activator is produced by a long sequence of chemical reactions. The prothrombin activator converts a blood protein called prothrombin into another protein called thrombin. Thrombin converts a soluble blood protein called fibrinogen into an insoluble protein called fibrin.