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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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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 longest a person has survived after a heart transplant is 24 years.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.