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Did you know?
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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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are more bacteria in your mouth than there are people in the world.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.