Immune-cell composition during the first year after HSCT. (A) Relative proportions of 6 major cell populations: CD8⁺ and CD4⁺ T cells, NK T cell, NK cell, monocytes, and B cells assessed at the indicated time points after HSCT: t₀ (n = 18), t₃ (n = 44), t₆ (n = 35), t₉ (n = 32), and t₁₂ (n = 37). Each stacked bar represents an individual. (B) Evolution of the frequency of CD56^bright, CD56^dim, CD16⁺ NK cells at indicated time points after HSCT: t₀ (n = 18), t₃ (n = 44), t₆ (n = 35), t₉ (n = 32), and t₁₂ (n = 37) fitted using LOESS regression with a 95% confidence interval. Day 0 indicates a pre-HSCT state of the donor. Color-coded lines represent linear regression according to cell subset. (C) Evolution of the frequency of CD56^dim, CD16⁺, NKG2A⁺, CD57^neg and CD56^dim, CD16⁺, NKG2A^neg, and CD57⁺ NK cells at the indicated time points after HSCT: t₀ (n = 18), t₃ (n = 44), t₆ (n = 35), t₉ (n = 32), and t₁₂ (n = 37) fitted using LOESS regression with a 95% confidence interval. Day 0 indicates a pre-HSCT state of the donor. Color-coded lines represent linear regression according to the cell subset. (D, E) Proportion of KIR⁺ CD56^dim NK cell at the indicated time points after HSCT: t₀ (n = 18), t₃ (n = 44), t₆ (n = 35), t₉ (n = 32), and t₁₂ (n = 37). The lines connect paired samples. Box plots display medians and IQRs, with whiskers representing 1.5× IQR.