CSF3 and acute myeloid leukemia: Also, the injection of GCSF into AML- (alone) (AML+GCSF), CYT-(alone) (CYT+GCSF), and AML+CYT (AML+CYT+GCSF) significantly increased the number of PLZF-stained cells/tubule compared to the relevant groups without GCSF 2 weeks post-injection (Figure 5A).