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In vitro cell uptake of T3 nanoparticles. Uncoated (a) and glutathione-coated (b) coumarin-6 nanoparticles were added to Neuro2A neuroblastoma cells. Uptake of the nanoparticles was monitored using fluorescence. Uptake of coumarin-6 loaded nanoparticles was detected by fluorescein isothiocyanate filter (green). DAPI staining was used for nucleic acids (blue) and the merged overlay was generated. Magnification is 20X
