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The average office desk has 400 times more bacteria on it than a toilet.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Blood is approximately twice as thick as water because of the cells and other components found in it.