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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



heparin  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.