Microbiology Immunology fee2df43 Virus infected cells killed by: A Natural killer cells B Plasma cells C B cells D None High-Yield Explanation Ans. is 'a'(Ref: Ananthanarayan, 8th/e, p. 131)Virus infected cells are killed by:(i) Innate immunity-by NK cells.(ii) Adaptive immunity-by cytotoxic T cells.