<prompt> MHC restriction is a pa of all except ?Antiviral cytotoxic T cellAntibacterial helper T cellcytotoxic cellsAllograft rejectionAutoimmune disorder  <response>: Ans. is d i.e., Autoimmune disorder MHC - Class I restriction Graft rejection Cytotoxic cell mediated cytolysis of viral infected or tumor cells. MHC - Class II restriction Graft versis host response Mixed leukocyte reaction 