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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.