Figure 3From: BMP2 gene delivery to bone mesenchymal stem cell by chitosan-g-PEI nonviral vectorCharacterization of chitosan-g-PEI and pIRES2-ZsGreen1-hBMP2 plasmid DNA complexes. The complexes were characterized by the critical complex ration by gel retardation (A), morphology observed by TEM (B), and particle size in histogram and zeta potential in line plot (C). Scale bar: 500 nm.Back to article page