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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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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
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There are more bacteria in your mouth than there are people in the world.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.