Kinetics of recovery of CD3⁺, CD4⁺, and CD8⁺ T, B, and NK cells after transplantation. Panel A shows CD3⁺ cells; panel B, CD4⁺ cells; panel C, CD8⁺ cells; panel D, B cells; and panel E, NK cells. Median circulating cell counts at each time point are compared between patients treated at dose levels 1 and 2. Time points at which level 2 patients had statistically significant increased counts are indicated by an asterisk.