Figure 3. The effect of different pinosylvin doses to combat oxidative stress in the ARPE-19 cell line. ARPE-19 cells were pretreated with pinosylvin at different concentrations for 24 h and exposed to the oxidative stress–causing agent, hydroquinone, for another 24 h before the cell viability test. Data are mean value±standard deviation (SD), n = 5. *p<0.05, significantly different from cells without pinosylvin (0 µM), ANOVA, and the t test.