Estrogen improves the hyperdynamic circulation and hyporeactivity of mesenteric arteries by alleviating oxidative stress in partial portal vein ligated rats

Figure 2 In situ detection of superoxide anion. Fluorescence micrographs of superior mesenteric arteries stained with the O₂•⁻-sensitive dye DHE (red fluorescence) were obtained from sham operation (SO) and partial portal vein ligation (PPVL) rats at 14 d after surgery. Images were acquired at identical settings. ^bP < 0.01 vs SO; ^cP < 0.05, ^dP < 0.01 vs PPVL + placobo (PLAC); ^fP < 0.01 vs PPVL + estrogen (E2).