<prompt> Which of the following cell does not have cytotoxic activity -NK cellsCytotoxic T-cellsHelper T-cellsAntibody dependent cells  <response>: Ans. is c i.e., Helper T-cells Cytotoxicity of different cells Natural killer cellsNot antibody dependentNot MHC restricted Cytotoxic T-cellsClass I MHC restrictedNot antibody dependent Antibody dependent cytotoxic T-cells ADCC a type of null cellAntibody dependentNot MHC restricted 