<prompt> Necrotizing aerioritis with fibrionoid necrosisis -Immediate hypersensitivityCell mediated immunityAntigen-antibody complex mediatedCytotoxic cell mediated  <response>: Ans. is c i.e., Antigen-antibody complex mediatedo The principal morphological manifestation of immune antigen-antibody complex injury is necrotizing vasculitis with necrosis of vessel wall and intense neutrophilic infiltration.o 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. 