Lytic potential of FSP26-specific CTL clone 1. HCT116, Colo60H, and LoVo-A2 cells endogenously expressing Caspase-5(-1) were efficiently killed by FSP26-specific CTL clone 1. Killing of targets is shown at different effector-to-target cell ratios (E:T ratios). All results are displayed as the mean and standard deviation from three replicate wells. Lysis was measured after 12 h.