Growth kinetics of WT1-infected 32D clones. Cells were cultured in 10% FBS-containing RPMI 1640 medium in the presence of IL-3 (50 U/mL; A), in complete deprivation of cytokines (B), or in the presence of G-CSF (rhG-CSF at 20 ng/mL; C), and viable cells were counted at the indicated time.