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IgG?
protects against bacteria and viruses by enhancing phagocytosis and triggers complement system.
What immunoglobulin is the most abundant?
IgG
Where is IgG found?
all blood antigens, intestines, and lymph
IgA
IgA lower resistance to infection
Where is IgA found?
sweat, tears, saliva, mucus, breast milk, and gastrointestinal secretions
IgM
activates complement = causes agglutination and lysis of microbes; ANTI-A AND ANTI-B ANTIBODIES
IgD?
found of surfaces of B cells as antigen receptors
IgE?
attach to receptors on mast and basophils; ALLERGIC RXN and defense against parasites.