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Confocal laser scanning microscope images of particles and KB cells. Cells were incubated with particles for 3 h. (a) Negative control, (b) F127 coated SPION and Nile Red, (c) F127-Folate coated SPION and Nile Red. Green: Wheat germ agglutinin-Alexa fluoro 488, Red: Nile Red, scale bar: 100 µm.
