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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The horizontal fraction bar was introduced by the Arabs.
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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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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.