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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.