Figure 3
From: Sildenafil restores endothelial function in the apolipoprotein E knockout mouse
Participation of reactive oxygen species. Data show the effect of the blockade of NADPH oxidase activity with apocynin on the cumulative concentration–response curve to acetylcholine (ACh) in untreated and treated apoE−/− mice and wild-type (WT) control mice. Values are mean ± SEM. **p < 0.01 vs. apoE−/− without blockage (one-way ANOVA).