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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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.