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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.