Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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There are 60,000 miles of blood vessels in every adult human.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
This is the first portrait of George Washington, painted by John Gadsby Chapman. Washington’s right
Nicolas Poussin, Landscape with St. John on Patmos.