291219.fig.004a
(a)
291219.fig.004b
(b)
Figure 4: Expression of EGFP DNA with pH-responsive nanoparticles (NPs) compared to PLGA NPs: HCT116 cells were incubated with NPs for 3 hours, washed, and then incubated in media for 48 hours followed by (a) microscopy and (b) flow cytometry analysis.