In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.