Figure 2From: A murine leukemia virus with Cre-LoxP excisible coding sequences allowing superinfection, transgene delivery, and generation of host genomic deletionsFlow cytometry analysis of control cells, demonstrating GFP-Cre, EYFP, and surface envelope (Env) expression. These control cells consist of NIH/3T3 cells uninfected or infected with AkvY or Akv2XY and GC4, a GFP-Cre expressing NIH/3T3 line expanded from a single clone.Back to article page