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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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People about to have surgery must tell their health care providers about all supplements they take.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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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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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.