FIGURE 2.

Thymopoiesis and homeostatic proliferation. A, Typical example of the gating strategy: expression of CD31 within CD4+ and CD8+ naive (CCR7+CD45RO−) T cells. B, percentage of RTE; naive T cells expressing CD31, before and after alemtuzumab therapy, before and after alemtuzumab therapy. C, Typical example of the gating strategy of CD4+ and CD8+ Ki-67+ T cells. D, the percentage Ki-67 expressing T cells within the total CD4+, CD4+ naïve, CD4+ total memory and CD4+ central memory and effector memory T cells before and after alemtuzumab therapy. E, the percentage Ki-67 expressing T cells within the total CD8+, CD8+ naive, CD8+ total memory, and CD8+ effector memory and EMRA T cells before and after alemtuzumab therapy. F, The percentage of Ki-67+ Treg cell. Because of low number of cells, we could not determine the percentage RTE and Ki-67+ cells for all patients. Data are shown as median, *P < 0.05; significant differences comparing pretransplant values to posttransplant values using the Wilcoxon Signed-Rank test. RTE, recent thymic emigrants.