Perforins are produced by -: (A) Cytotoxic T cells, (B) Suppressor T cells, (C) Memory helper T cells, (D) Plasma cells
Answer is A. A protein found in the cytoplasmic granules of both T-cytotoxic lymphocytes and natural killer cells Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg: 137