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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.