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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.