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Cell uptake of NCI-H460 cells treated with co-delivery nanoparticles containing FAM-siRNA. (A) Cells were washed with PBS, and observed by inverted fluorescence microscope. Scale bar = 50 μm. (B) Cells were trypsinised and resuspended, and the FAM signal was analyzed by flow cytometer. (C) Mean fluorescence intensity of nanoparticles was calculated. Results are presented as the mean ± SD (n = 3).
