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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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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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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.