No enrichment of CDD-transduced myelopoiesis over time by application of cytidine analogs. Percentages of EGFP-expressing peripheral blood granulocytes (mean ± SEM) are given for a total of 5 experiments (n = 5, 6, 5, 4, 3 for C1-5) using cytarabine (A) and 2 experiments (n = 3 for G1 and G2) using gemcitabine (B) application. Lines represent individual experiments and dashed lines indicate experiments performed at initially low gene transduction rates.