Reconstitution of a mature, donor-type NK-cell repertoire after haploidentical HSCT takes at minimum 3 months. (A) Mean percentages, with SE, of PB CD56⁺CD3⁻ cells over total circulating lymphocytes (top panel), absolute NK cell counts (bottom panel), and percentage of CD56^bright NK cells within the total NK cell pool (pies below the panel) over time after haploidentical HSCT. (B) Recovery of cell surface markers for which statistically significant differences were observed in CD56^bright (left panel) or CD56^dim (right panel) at day 30 after haploidentical HSCT, compared with healthy blood donors (see asterisks in Figure 1). Mean percentages of expression, with SE, of CD25 (○), CD117 (□), NKG2A (▴), CD62L (♦), and CD16 (●) were analyzed at different time points after haploidentical HSCT in the relevant NK-cell subsets.