PB cell characteristics after mobilization. (A-D) PB cell counts for WBC (A), absolute neutrophil count (ANC) (B), absolute lymphocyte count (ALC) (C), and CD34⁺ cells (D) were obtained immediately before mobilization and after plerixafor (Plx) administration during apheresis at the indicated time intervals. The shaded gray rectangle represents the period of apheresis collection. The thickened portions of the colored lines in panel A indicate precise beginning and end times for apheresis in each subject.