WBC counts and circulating CD34⁺cells. Box plots of peripheral WBC counts (A), peak values (B), and box plots (C) of CD34⁺ cells/μL blood in poor mobilizers receiving rhG-CSF (n = 16) or rhGH/rhG-CSF (n = 16). The peak of CD34⁺ cells was defined as the maximum number of CD34+ cells detected in the peripheral blood during mobilization. The boxes extend from the 25th percentile to the 75th percentile, the lines indicate the median values, and the whiskers indicate the range of values. Statistical difference was evaluated using the Wilcoxon matched pairs test (2-tail). Number in panel (A) indicates P value.