Fig. 4. Dye transfer in HeLa/Cx43 and HeLa/Cx45 transfectants. Single cells were co-injected with Lucifer Yellow (LY) and DAPI, and dye transfer was assessed as the number of cells receiving dye per injected cell at 4 minutes. Both Cx43 transfected cell lines transferred LY well but did not pass DAPI. Conversely, both Cx45 transfected cell lines transfer DAPI better than LY.