Select the immunoglobin (Ig) classes that is correctly matched to their facts. Check all that apply.  

_____  IgA—found in saliva, tears, the GI tract, and mother's milk
_____  IgD—serve as receptors on the surfaces of T cells
_____  IgE—promotes the release of histamine from mast cells and basophils, causing allergy symptoms
_____  IgG—a minor form of immunoglobulin, used only in response to parasitic worms
_____  IgM—first secreted during primary response, promotes agglutination, activates complement


__X__  IgA—found in saliva, tears, the GI tract, and mother's milk
_____  IgD—serve as receptors on the surfaces of T cells
__X__  IgE—promotes the release of histamine from mast cells and basophils, causing allergy symptoms
_____  IgG—a minor form of immunoglobulin, used only in response to parasitic worms
__X__  IgM—first secreted during primary response, promotes agglutination, activates complement

Biology & Microbiology

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