Fig. 11From: Nanotechnology-based ocular drug delivery systems: recent advances and future prospectsRepresentative images of the immunofluorescence assays. a, b The nuclei are stained blue with DAPI, the fibrous membrane of the vitreous cavity is marked by the red arrows. c, d The red arrows indicate the retinal pigment cell layer. e, f The expression of PDGFR-α and FibronectinBack to article page