Determination of the prevalence of the AML1-ETO fusion gene was accomplished by TaqMan real-time PCR.     ///    The AML1-ETO fusion gene was detected up 50% of the M2 subgroup and absent in the M1 and M4 subtypes and healthy controls.     ///    Geographic heterogeneity of the AML1-ETO fusion gene in Iranian patients with acute myeloid leukemia.. 