Fig. 1.
Superoxide anion production and superoxide dismutase (SOD) activity in the venous limb of the rat arteriovenous fistula (AVF) and in the femoral vein of sham-operated (sham) rats 1 wk after AVF creation. A: superoxide anion production as determined by 2-hydroxyethidium in the venous limb of the rat AVF and in sham femoral veins. *P < 0.05 vs. sham; n = 9 and 11 rats for sham and AVF groups, respectively. B: total SOD activity and Cu/Zn SOD activity measured in the venous limb of the rat AVF and in sham femoral veins. *P < 0.01 vs. sham; n = 10 in each group.