The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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The horizontal fraction bar was introduced by the Arabs.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Eye Color Is a Sex-Linked Trait in Drosophila
Receptive Fields of Color-Sensitive Ganglion Cells
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