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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 first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.