Figure 4. Effect of microemulsion and liposomal formulation of tocotrienol (0.03%) on lens iNOS and 3-NT during 4 weeks period of treatment. iNOS- inducible nitric oxide synthase; NT- nitrotyrosine; VE – vehicle for microemulsion; VL – vehicle for liposomes. All values are mean ± SD (n=6). ^ap < 0.05 versus normal; ^bp < 0.05 versus VE; ^cp < 0.05 versus VL.