Figure 3. mRNA expression of extrinsic apoptotic signaling molecules (A) Fas, (B) TNFα, (C) Caspase-8, (D) Caspase-3, and (E) Bid in selenite-induced cataractogenesis. The mRNA expression of apoptotic genes were analyzed with real-time PCR using SYBR Green dye. Target gene expression was normalized to β-actin mRNA expression, and the results are expressed as fold change from control. ^a represents statistical significance of Group I versus Group II, and ^b represents the statistical significance of Group II versus Group III at the the level of p<0.05 using SNK test.