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There are 60,000 miles of blood vessels in every adult human.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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