Fig. 6

In vitro gene transfection efficiency evaluation of Au NR@PAMAM -GX1/pDNA complexes. A In the presence of serum, fluorescence images of HCT-8 cells transfected with Au NR@PAMAM-GX1/pDNA complexes in different weight ratios. B The gene transfection efficiency of Au NR@PAMAM-GX1/pDNA with different N/P ratios were determined using flow cytometry