Representative western blot protein bands of iNOS are shown for control ischemia (A) and postconditioning (C). Results suggest that iNOS was significantly increased from 1 h to 48 h after stroke in rats receiving control ischemia (B). Postconditioning inhibited iNOS expression (D).*, **, *** vs sham, P < 0.05, 0.01. 0.001, respectively; ###, P < 0.001, respectively, between the two indicated groups. n = 6/group. Scale bar, 50 μM.