Types III and IV: Immune Responses Quiz
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Questions and Answers

What is the mechanism of Type III hypersensitivity reaction?

Formation of immune complexes involving IgG and IgM antibodies against soluble antigens

When do immune complexes deposit in postcapillary venules during Type III hypersensitivity reaction?

3-8 hours after exposure to antigen

What are the consequences of the Type III hypersensitivity reaction?

Necrotizing vasculitis, fibrinoid necrosis, and tissue injury

Provide an example of a systemic immune complex-mediated disease.

<p>Serum sickness</p> Signup and view all the answers

What are the microscopic features associated with Type III hypersensitivity reaction?

<p>Necrotizing vasculitis, fibrinoid necrosis, and inflammatory infiltrate involving neutrophils</p> Signup and view all the answers

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