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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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Cyanide works by making the human body unable to use oxygen.
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The longest a person has survived after a heart transplant is 24 years.
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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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There are more sensory neurons in the tongue than in any other part of the body.