Fig. (2) Plasma urea levels in UUO. Plasma urea in SHAM operated rats and rats with 3 and 10 days of UUO respectively. Expressed as mean +/- standard deviation. SHAM = sham operated animal, 3d = 3 days, UUO = unilateral ureteric obstruction, 10d = 10 days. *p<0.05 vs sham; #p<0.001 vs sham; &p<0.05 vs 3 d UUO.