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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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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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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
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