Correlation between peripheral WBC count and the number of CD34⁺ cells or CFU-GM on days 5 and 6 of G-CSF treatment. (A) WBC count versus the number of CD34⁺ cells per milliliter on day 5. (B) WBC count versus the number of CFU-GM per milliliter on day 5. (C) WBC count versus the number of CD34⁺ cells per milliliter on day 6. (D) WBC count versus the number of CFU-GM per milliliter on day 6. No significant correlation was observed.