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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.