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The average adult has about 21 square feet of skin.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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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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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Urinary System Urinary System
Whipple procedure (pancreatoduodenectomy) Whipple procedure (pancreatoduodenectomy)
Organs of the urinary system. This illustration is an anterior view of a female with the abdominal w Organs of the urinary system. This illustration is an anterior view of a female with the abdominal w
Urinary tract infection. A UTI is characterized by fever, lumbar or abdominal pain, and pain or burn Urinary tract infection. A UTI is characterized by fever, lumbar or abdominal pain, and pain or burn
Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ... Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ...
Video: Gas exchange - partial pressure, locations, external and internal respiration

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