Figure 2: (a) Immunohistochemical staining showing expression and localization of endothelial nitric oxide synthase in normal control liver section. In the presented photomicrograph, endothelial nitric oxide synthase immunoreactivity appears as dark brown stain in hepatocytes and vascular endothelium. (b) Immunohistochemical staining showing expression and localization of endothelial nitric oxide synthase in fructose enriched diet control liver section. In the presented photomicrograph, endothelial nitric oxide synthase immunoreactivity appears as light brown stain in hepatocytes and vascular endothelium. (c) Immunohistochemical staining showing expression and localization of endothelial nitric oxide synthase in rosiglitazone -treated rats liver section. In the presented photomicrograph, endothelial nitric oxide synthase immunoreactivity appears as dark brown stain in hepatocytes and vascular endothelium. (d) Immunohistochemical staining showing expression and localization of endothelial nitric oxide synthase in quercetin-treated rats liver section. In the presented photomicrograph, endothelial nitric oxide synthase immunoreactivity appears as dark brown stain in hepatocytes and vascular endothelium. (e) Immunohistochemical staining showing expression and localization of endothelial nitric oxide synthase in rosiglitazone + quercetin -treated rats liver section. In the presented photomicrograph, endothelial nitric oxide synthase immunoreactivity appears as dark brown stain in hepatocytes and vascular endothelium