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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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There are more sensory neurons in the tongue than in any other part of the body.
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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

