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ESCs enhance the proliferative capacity of hRPE cells by activating the PI3K pathway. a Expression of PI3K pathway genes in hRPE cells, as assessed by RT-qPCR. b Western blotting of PI3K pathway genes in hRPE cells. β-actin served as the internal control. c The expression of FAK and P3K in hRPE cells as determined by immunofluorescent staining. Scale bar, 50 μm. d Immunofluorescence assays of pAKT in hRPE cells. Scale bar, 50 μm. Data are means ± SDs. **P < 0.01; ***P < 0.001
