Fig. 4

The colonial growth of FTEC on Day 5. FTECs were transfected with RFP (marked with red fluorescent protein) and GFP (marked with green fluorescent protein). Both FTECs were mixed prior to plating into the low attached dish. Regenerated spheres (colonies) were either positive for RFP or GFP. (a) RFP. (b) GFP. (c) Merge image