Fig. 2From: Embryonic stem cell microenvironment enhances proliferation of human retinal pigment epithelium cells by activating the PI3K signaling pathwayEffects of coculture with ESCs on morphological changes in hRPE cells. a Representative images of morphology by phase microscopy. b The expression of OCT4 in ESC before and after coculture as determined by immunofluorescent staining. Scale bar, 50 μmBack to article page