DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
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Heparin-filled syringe. Heparin is an anticoagulant found naturally in the human body. It occurs mainly in tissues surrounding the capillaries of the liver and lungs, where it inhibits the formation of blood clots. Heparin is made synthetically as a drug, known as low molecular weight heparin (LMWH), which is used to prevent thrombosis and embolism in patients with vascular diseases. It is also used during open heart surgery, heart bypass surgery and kidney dialysis, to prevent clotting. This variant of LMWH is called Enoxaparin and marketed as Clexane and Lovenox.
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