CEBPE and acute myeloid leukemia: On the other hand, whereas both GCSF and Am80‐GCSF induce significantly higher expression of RARβ2 and C/EBPε than does Am80 in the late differentiation induction stage of normal cells, only Am80‐GCSF consistently induces significantly higher expression of both RARβ2 and C/EBPε than does GCSF throughout the full differentiation induction period in primary human AML specimens (Figs 1B versus 2Bi and 3Dv).