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(A) RPE immunocytochemistry for Nrf2 (red) (n = 4), results showed that blue light increased Nrf2 staining, PRGF 100% combined with blue light resulted in reduced intensity of staining compared to blue light results; (B) Nrf2 gene expression was stimulated by blue light while PRGF 100% reduced it. Statistical analysis: One-way ANOVA, Tukey multiple comparison test, and * p < 0.05. Scale = 0.5 µM.
