Fig. 7. (A) Immunofluorescence images of PC12 cells on the various nanocoatings with or without visible-light stimulation, and the cell staining: F-actin with TRITC phalloidin (red), vinculin with anti-vinculin–FITC antibody (green), and nuclei with DAPI (blue). Analysis results of (B) neurite length, (C) cell area, (D) cellaspect ratio, and (E) cell circularity of PC12 cells on the different nanocoatings with or without visible-light stimulation.