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There are more nerve cells in one human brain than there are stars in the Milky Way.
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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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Approximately 25% of all reported medication errors result from some kind of name confusion.
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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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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.