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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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