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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Illicit drug use costs the United States approximately $181 billion every year.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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