Figure 2. Effects of optineurin siRNA on RGC-5 and PC12 cell growth as measured by the MTT assay. *p<0.01 (versus sihoptineurin-NC and blank), **p<0.001 (versus sh-NC and blank) n=3. In the experimental groups, sihoptineurin-3 groups significantly inhibited cell growth compared to controls at 24 h, 48 h, and 72 h.