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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The horizontal fraction bar was introduced by the Arabs.
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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.