NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,041 terms related to cancer and medicine.
- listen (HEH-puh-rin)
- A substance that slows the formation of blood clots. Heparin is made by the liver, lungs, and other tissues in the body and can also made in the laboratory. Heparin may be injected into muscle or blood to prevent or break up blood clots. It is a type of anticoagulant.