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In 1864, the first barbiturate (barbituric acid) was synthesized.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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There are 20 feet of blood vessels in each square inch of human skin.