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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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There are 60,000 miles of blood vessels in every adult human.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.