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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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There are approximately 3 million unintended pregnancies in the United States each year.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.