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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.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.