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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Women are 50% to 75% more likely than men to experience an adverse drug reaction.
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The FDA recognizes 118 routes of administration.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.