Growth curves of murine bone marrow cells transduced with the vectors shown in Figure 1 and cultured in suspension in the absence of added cytokines and in the presence (closed symbols) or absence (open symbols) of CID.

Each line represents a single experiment. For F1mpl and F1Flt-3, cells were cultured in FK1012 (100 nM); for F36Vmpl and F36Vgcsfr, cells were cultured in AP20187 (100 nM). Transduction efficiencies as assessed by G418-resistant progenitors are as follows: F1mpl, 100%; F36Vmpl, 36% to 78%; F1Flt-3, 23% to 56%; F36Vgcsfr, 35% to 52%.