Recovery of lymphocyte subsets after HSCT. Median lymphocyte counts evaluated at baseline, at transplantation, and at 1, 2, 3, and 6 months and 1 and 2 years after transplantation; error bars denote the SEM. Normal values are represented by the solid thick lines indicating the central 95% of the area under the distribution curve of values in healthy adults.³⁵  The numbers of patients analyzed were 17 before transplantation, 15 on day 30, 15 on day 60, 16 on day 90, 16 on day 180, 14 on day 365, and 3 on day 730 for B, T, and NK cells (A-D); for CD45 naive and memory cells (E-F) the analysis was available for 6 patients at all the time points.