Question

which of the following is not true of type iii hypersensitivity? multiple choice antigen - antibody complexes are deposited in the basement membrane of epithelial tissues involves production of igg and ige antibodies involves an immune complex reaction acute post - streptococcal glomerulonephritis is an example

Explanation:

To solve this, we analyze each option based on Type III hypersensitivity (immune complex-mediated):

• Option 1: Antigen - antibody complexes deposit in basement membranes (true for Type III, e.g., in tissues like kidneys).
• Option 2: Type III involves IgG and IgM (not IgE). IgE is associated with Type I (immediate) hypersensitivity. So this statement is false.
• Option 3: Type III is defined by immune complex reactions (true).
• Option 4: Acute post - streptococcal glomerulonephritis is a classic Type III example (true).

Answer:

The option that is not true of type III hypersensitivity is: "Involves production of IgG and IgE antibodies" (the second option among the given choices).