Boxplots of peripheral WBC counts (A) and CD34⁺ cell levels (B) for patients in the collection phase. Panel I shows the data for patients receiving filgrastim alone 10 μg/kg/d for 7 days (n = 41) and panel II for patients receiving 20 μg/kg/d SCF and 10 μg/kg/d filgrastim for up to 13 days (n = 59). The boxes indicate the range of values and the lines indicate the median value.