Figure 6. Expresion of nitric oxide synthases and protein tyrosine nitration. Relative protein expression of (A) endothelial constitutive nitric oxide synthase (eNOS), (B) inflammation inducible nitric oxide synthase (iNOS), and (C) nitrotyrosine, in eyecup homogenates from normotensive (CONTROL) and hypertensive (Nω-nitro-L-arginine methyl ester, L-NAME) rats. The quantitative fold changes in protein expression were determined relative to GAPDH protein levels in each corresponding group. Plotted values are expressed as mean ± standard error of the mean (SEM) of seven animals per group, and three western blots per group are shown as a representation of all animal samples processed.*p<0.05, **p<0.01 versus the CONTROL group.