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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
The longest a person has survived after a heart transplant is 24 years.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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