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Did you know?
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.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.