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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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There are 20 feet of blood vessels in each square inch of human skin.
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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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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").