Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Blood is approximately twice as thick as water because of the cells and other components found in it.
angler fish 2
While brown rice is a healthy whole-grain addition to any meal
Fish and chips
On the Flexible Item Selection Task (FIST) children are presented with three cards