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Did you know?
There are more bacteria in your mouth than there are people in the world.
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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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Everyone has one nostril that is larger than the other.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.