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Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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.