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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.