Number of NK cells at D+28 after dUCB correlates with the number and percentage of CD56^brightand CD56^dimNK cells. (A) Absolute number of CD56⁺Lin⁻ NK cells in each tertile. (B) Absolute number of CD56^bright (R = 0.85, 95% CI: 0.77-0.90; P < .01) and CD56^dim (R = 0.95, 95% CI: 0.92-0.97; P < .01) NK cells in each tertile as a function of the total NK cell population. (C) Proportion of CD56⁺Lin⁻ NK cells in each tertile (R = 0.57, 95% CI: 0.40-0.70; P < .01). (D) Proportion of CD56^bright (R = 0.27, 95% CI: 0.06-0.46; P = .01) and CD56^dim (R = −0.28, 95% CI: −0.47–0.06; P = .01) NK cells in each tertile. Data represented as a data point for each patient with the mean as the solid middle line with standard error above and below. R = Spearman correlation coefficients. Healthy donor controls for panel B are represented by the dashed line (mean) and gray box (standard error). The absolute number of each population was calculated by multiplying the proportion of each NK differentiation stage by the absolute number of NK cells. *R = ±0.25-0.50; **R = ±0.50-0.8; ***R > ±0.8.