125 kDa PaI and 250 kDa IaI expression in ovine cerebral cortex plotted as the ratio to the internal control standard in the sham control, 4h, 24h, and 48h ischemia-reperfusion (I/R) groups. 125 kDa PaI and 250 kDa IaI: Expression was lower in the 4 h I/R group, Purified human IAIP shown as a positive control. *P<0.05 versus the control group, +P<0.05 versus 24 h and 48 h I/R. Values are mean ± SEM.