Cells expanded in the presence of AP1903 are predominately erythroid.

CD34-selected cord blood cells were transduced with the MFM vector and incubated in the presence or absence of AP1903. On the days indicated, aliquots of cells were removed from the suspension culture and tested by flow cytometry for binding of antibodies directed against glycophorin A and CD33. The cells incubated without the drug died following day 7 and were therefore not available for analysis.