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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%