Figure 4From: Differential intracellular distribution of DNA complexed with polyethylenimine (PEI) and PEI-polyarginine PTD influences exogenous gene expression within live COS-7 cellsGene expression efficiency mediated by PEI- and PEI-Arg polyplexes. The percentage of GFP positive cells (A) and the relative amount of fluorescence per GFP positive cell (B) was calculated for polyplexes composed of PEI (■) and PEI-Arg (▲) complexed with pEOTCGFP, as detected by FACS 24 h post transfection. Data represented as mean values ± SEM (N = 3).Back to article page