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Time dependent cellular uptake of gemcitabine and antisense-miRNA-21 co-encapsulated PEGylated-PLGA-NPs in Hep3B cells. (a) Confocal microscopic images (red, Cy5-fluorescence from co-encapsulated Cy5-antisense-miRNA-21; blue, DAPI nuclear stain). (b) FACS analysis of Cy5-antisense-miRNA-21 co-encapsulated NPs treated Hep3B cells.
