Immune reconstitution after HCT. Reconstitution of absolute lymphocyte count (A), total CD3⁺ T cells (B), total CD8⁺ T cells (C), total CD4⁺ T cells (D), Tregs (E), total NK cells (F), and total B cells (G) after HCT. The boxes show the interquartile range of absolute cell count (per μL) for each immune cell type. The bold horizontal lines inside of the boxes and the corresponding numbers on the bottom indicate the median absolute cell count (per μL). The whiskers represent 1.5× the height of the box (or minimum/maximum values if there is no value in that range). The circles indicate the outliers. *P < .05, compared with the pre-HCT cell count.