Figure 6

Confocal fluorescence images of HeLa cells transfected with complexes for 24 h in the presence of serum.

(a)–(c) cells were incubated with PEI-Ada-13.7@RDM-labled DNA; (d)–(f) cells were incubated with PEI-Ada-13.7-LCD@RDM-labled DNA. The plasmid DNA was labelled with rhodamine (RDM) and the nucleus were stained by DAPI (N/P = 20).