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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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The longest a person has survived after a heart transplant is 24 years.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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The horizontal fraction bar was introduced by the Arabs.