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The horizontal fraction bar was introduced by the Arabs.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.