Same as (A), except that activated caspases were assessed by intracellular staining (n = 4). Statistical analyses were conducted using unpaired t tests (two-tailed). Each symbol represents an individual mouse; error bars depict the mean with SD.*p ≤ 0.05,**p ≤ 0.01,***p ≤ 0.001; ns, not significant. Data are representative of two (A), two (B), three (C), two (D), and two (E) independent experiments; one to three recipient mice were injected with purified NK cells in each independent experiment. See alsoFigure S4.