IL-10 restored eNOS expression in ET-1-treated aortic rings. (A) Representative Western blot shows expression of eNOS in untreated (control), ET-1-treated (100 nmol/L), and ET-1- and IL-10-treated aortic rings. (B) Densitometric analysis was performed on untreated (control) (white bar), ET-1-treated (100 nmol/L, black bar), and ET-1- and IL-10-treated (grey bar) aortic rings. Values are expressed as the normalized ratio of the intensities of eNOS to β-actin (n = 7–9). Significant at *, p < 0.05.