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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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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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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.