NK cell analysis. NK cell repertoire at 3 and 6 months after allo-SCT. Where indicated, transplant samples were stratified for CMV-reactivated recipients (filled symbols) or CMV-seronegative recipients (open symbols). Bullets depict recipients of the prospective αβ T-cell–depleted cohort; squares depict recipients of the T-cell–replete cohort; triangles depict healthy donors. All cell fractions are presented as fraction of NK cells. Statistics: Mann-Whitney U test (*P < .05; **P < .01). Comparisons without indication of significance where not statistically different.