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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Everyone has one nostril that is larger than the other.
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Your heart beats over 36 million times a year.
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There are approximately 3 million unintended pregnancies in the United States each year.
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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.