Ncf4 potentially cooperates with Sox4 and reduced Sfpi1 expression in myeloid leukemia induction. Real-time RT-PCR analysis of total RNA isolated from spleens of leukemic animals and normal mice using primers specific for mouse Ncf4 (A) and Fgf3 (B). Pathology numbers of animals are listed on the x-axis. Relative gene expression levels (average) of 3 RT-PCR analyses were calculated by normalizing to β₂-microglobin mRNA levels in the same sample and in normal spleen. (A) *Tumors have an Ncf4 integration. (B) *Tumors have an Fgf3 integration.