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In 1864, the first barbiturate (barbituric acid) was synthesized.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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