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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
The familiar sounds of your heart are made by the heart's valves as they open and close.
The average office desk has 400 times more bacteria on it than a toilet.
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