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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.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
Cyanide works by making the human body unable to use oxygen.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.