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The average office desk has 400 times more bacteria on it than a toilet.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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There are 60,000 miles of blood vessels in every adult human.