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5 Cards in this Set
- Front
- Back
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IgM |
Surfaces of unstimulated B cells, free in circulation; First antibodies to be secreted by B cells in primary response, promotes agglutination, activates complement system, stimulates phagocytic activity |
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IgG |
Blood and lymphatic circulation; Most abundant antibody in primary and secondary responses, confers passive immunity to fetus, stimulates phagocytic activity and complement system |
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IgA |
Body secretions (tears, breast milk, saliva, mucus); Blocks attachment of pathogens to mucous membranes, passive immunity for breastfed infants |
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IgE |
Linings of gastrointestinal and respiratory tracts; Stimulates mast cells and basophils to release histamine, triggers allergic response |
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IgD |
Surface of unstimulated B cells; Membrane receptor for mature B cells, important in clonal selection |
