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Everyone has one nostril that is larger than the other.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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