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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.