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HCT-116 colon cancer cells were pretreated with endocytosis inhibitors (chlorpromazine, amiloride, and genestein) followed by treatment with HA-FITC-CNPs (green fluorescent) to evaluate the mechanism of endocytosis by (a) confocal microscopy. Nucleus was stained with DAPI (blue fluorescent). Scale bar = 35 μm. (b) Flow cytometry analysis.
