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In 1864, the first barbiturate (barbituric acid) was synthesized.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Your heart beats over 36 million times a year.
The familiar sounds of your heart are made by the heart's valves as they open and close.
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