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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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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The average adult has about 21 square feet of skin.