Chronic graft rejection occurs due to what type of hypersensitivity reaction: (A) Type IV, (B) Type III, (C) Type II, (D) Type I
Answer is A. Graft rejection is an immunologic destruction of transplanted tissues or organs between two members or strains of a species differing at the major histocompatibility complex for that species (i.e., HLA in man and H-2 in the mouse). Ref microbiology textbook 8/e ananthnarayana