Fig. 1From: Assessment of Cellular Uptake Efficiency According to Multiple Inhibitors of Fe3O4-Au Core-Shell Nanoparticles: Possibility to Control Specific Endocytosis in Colorectal Cancer CellsCharacterization of the synthesized Fe3O4-Au core-shell NPs. a, b TEM observations of the synthesized Fe3O4-Au core-shell NPs. c, d NPs in aqueous solution, before and after applying an external magnetic field. e UV absorbance peak of synthesized core-shell NPs appears at ~ 530 nm. f Magnetic hysteresis loops of Fe3O4 coreBack to article page