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. Author manuscript; available in PMC: 2011 Sep 28.
Published in final edited form as: ACS Nano. 2010 Sep 28;4(9):5505–5511. doi: 10.1021/nn101638u

Figure 7.

Figure 7

CLSM images of HeLa cells transfected by PEI/PAH-Cit/PEI/MUA-AuNPs (A), Lipofectamine (B), PEI (C), PEI/MUA-AuNPs (D), and PEI/PSS/PEI/MUA-AuNPs (E). The w/w ratio of Au/DNA 10.0 was used for all of the gold nanoparticles. Images were taken after cells were incubated with NPs for 6 h. siRNA was labeled with cy5 (red, middle row). The late endosome and lysosome were stained with LysoTracker Green (green, first row). The yellow fluorescence (third row) is a result of colocalization of LysoTracker Green and cy5-labeled siRNA. The scale bar is 10 μm.