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Figure 3 Effects of three days nitroglycerin (NTG) treatment on vascular superoxide production in aortas from control rabbits (C) and Watanabe heritable hyperlipidemic rabbits (WHHL) as estimated by lucigenin (250 and 5 µM) and CLA-enhanced chemiluminescence. The data are presented as mean ± SEM (n = 4 to 10 per group). *p < 0.05 versus control, p < 0.05 versus WHHL.