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Cellular uptake study in Caco-2 cells observed with fluorescence microscope. The cells were incubated with coumarin-6 (C6) solution (as a control) and C6-loaded formulations, corresponding to 100 ng/mL C6. C6 solution as a control and formulations (corresponding to 100 ng/mL C6) Blue and green colors indicate 4′,6-diamidino-2-phenylidone (DAPI) staining and C6, respectively. The scale bar is 150 µm.
