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The horizontal fraction bar was introduced by the Arabs.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.