Match each description or example with the correct type of hypersensitivity Type

Question

Match each description or example with the correct type of hypersensitivity Type I (acute) hypersensitivity Type Il (cytotoxic) Type I immune Type IV (delayed) hypersensitivity ersensitivity omplex) hypersensitivity lgG or lgM binds to an on basophils and mastantigen, which leadsof antigen-bound lgG to lysis or opsonization of target cell A poison ivy allergy Antigens bind to IgE Insoluble complexes is an example of this type of hypersensitivity cells and stimulate them to secrete vasoactive substances or lgM precipitate out in tissues. T cells elicit a response Acute glomerulonephritis Asthma Transfusion of 12 to 72 hours after is an example of this type of mismatched blood is an example can cause this type of hypersensitivity initial exposure hypersensitivityof this type of hypersensitivity

Explanation / Answer

type 1 (acute hypersensitivity):antigens bind to IgE on basophils and mst cells and stimulate them to secrete vasoactive substances.eg asthma

type 2 (cytotoxic):IgG or IgM binds to an antigen which leads to lysis or opsonization of target cell.eg transfusion of  mismatched blood

type 3(immune complex ):insolube complexes of antigen bound IgG or IgM precipitate out in tissues.eg acute glomerulonephiritis .

type 4(delayd):t cells elicit a response 12-72 hrs after initial exposure .egpoison ivy allergy

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