**Figure 2. **mRNA expression of *Cat* (**A**), *SOD-1* (**B**), and *Gpx* (**C**) from Group I, II, and III rat lenses. Total RNA was extracted from rat lens tissues, and mRNA levels were measured using
real-time PCR normalized to *β-actin* and expressed as folds of increases or decreases relative to controls. The data are expressed as mean ± standard error of
the mean (SEM) of three independent observations. Statistical significance between the control group versus the other groups
was considered at the level of p<0.05 using SNK test. ^{a} represents the statistical significance Group I versus Group II, and ^{b} represents the statistical significance between Group II and Group III.