Figure 1.

DCN exhibited a protective effect against H₂O₂-induced cell damage. (a and b) ARPE-19 cells were treated with DCN or H₂O₂ for 24 h at different concentrations and the cell viability was assessed using CCK8. (c) ARPE-19 cells were pretreated with DCN for 24 h at various concentrations and incubated with H₂O₂ (300 μM) for another 24 h to determine the cell viability. (d) Morphological changes in ARPE-19 cells following indicated treatment. Data is shown as mean ± SD, ^∗∗p < 0.01, and ^∗∗∗p < 0.001.