Boxplot of PB CD34⁺ and GM-CFC levels during the collection phase (all patients). PB levels of CD34⁺ cells and GM-CFC were evaluated for all patients on days 1, 4, 5, 6, 7, and 8 during the mobilization phase of the study. Patients received cytokines (Filgrastim or r-metHuSCF and Filgrastim) on days 1 through 7. All patients were leukapheresed on days 5 through 7.