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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.