MYC and acute lymphoblastic leukemia: For example, RFP+ lymphoblasts from Myc-induced T-ALL were able to intravasate into Tg(fli:GFP)-labeled vasculature, while cells that overexpressed the antiapoptotic protein Bcl2 were unable to enter the vasculature and, thus, were arrested in a T-LBL state (Figure 2) [10].