GYPA and infection: (A) Quantitative RT-PCR and (B) Western blot showing the expression of TFR2 in human CD34+ cells five days post-infection with the respective lentiviral shRNAs targeting TFR2 (TFR2 sh1 and sh2) and a control luciferase gene (shLUC). (C) Representative FACS plots of erythroid cell surface markers CD71 (transferrin receptor) and CD235a (Glycophorin A) expression at various time points during erythroid differentiation.