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The horizontal fraction bar was introduced by the Arabs.

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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 calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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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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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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