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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.