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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.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are more sensory neurons in the tongue than in any other part of the body.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.