Necrotizing aerioritis with fibrionoid necrosis is ?
Ans. is 'c' i.e., Antigen-antibody complex mediated The principal morphological manifestation of immune (antigen-antibody) complex injury is necrotizing vasculitis with necrosis of vessel wall and intense neutrophilic infiltration. The necrotic tissue and deposits of immune complexes, complement and plasma proteins produce a smudgy eosinophilic deposition that obscures the underlying cellular detail, an appearance termed fibrinoid necrosis.
Immediate hypersensitivity
Cell mediated immunity
Antigen-antibody complex mediated
Cytotoxic cell mediated