Asthma cases in Americans are about 75% higher today than they were in 1980.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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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.
Modern jawless fish
A giant grouper at the Georgia Aquarium, seen swimming among schools of other fish