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The average office desk has 400 times more bacteria on it than a toilet.
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People about to have surgery must tell their health care providers about all supplements they take.
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There are 60,000 miles of blood vessels in every adult human.
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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.