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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.