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The human body produces and destroys 15 million blood cells every second.
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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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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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The horizontal fraction bar was introduced by the Arabs.