Whereas the results clearly demonstrate that CD133/2+ cord blood-derived G0 and G1/S/G2/M cells in the absence of EPO only form GM colonies and the CD133/2− cells form a mixture of erythroid and GM colonies, the distinction is less consistent and the results are more variable in comparable CML cells. The gene discussed is EPO; the disease is chronic myelogenous leukemia, BCR-ABL1 positive.