Reconstituting NK cells display an activated phenotype after HSCT. (A) Frequency of Ly49G2⁺ NK cells at post-HSCT day 13. (B) Representative histogram of Ly49G2 staining on NK cells after HSCT vs resting. (C) MFI of Ly49G2 on splenic NK cells from HSCT mice at post-HSCT day 13. (D) Representative dot plots of KLRG1 on NK cells in resting and HSCT mice (post-HSCT day 13), quantified in a bar graph. (E) Representative dot plots of Ki67 on NK cells quantified in resting and HSCT mice (post-HSCT day 13). Means ± standard error of the mean are shown for 3 or 4 mice per group representative of 2 experiments. *P < .05; **P < .01 , by 1-way ANOVA with Tukey post hoc test.