GFI1 and acute myeloid leukemia: The relative m-RNA level between empty vector-transduced and GFI1-expressing vector-transduced cells ranged between 5–200 fold, but was similar to the GFI1 m-RNA level between low GFI1-RNA expressing AML cell lines (such as KG-1 and K-562) and GFI1- high expressing cell lines (such as Kasumi-1 and THP-1), thus experimentally induced GFI1 RNA-levels were within range compared to physiological levels.