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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.