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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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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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The horizontal fraction bar was introduced by the Arabs.
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Medication errors are more common among seriously ill patients than with those with minor conditions.