GFAP expression levels in WKYRs and SHRs after Et-1 injection. Comparison of GFAP expression levels in the striatum (A) and cortex (B) of WKYRs and SHRs after induction of focal cerebral ischemia with 200 pmol Et-1. There is no difference between the two rats at every time point (n = 3 to 4 for the sham WKYRs and n = 4 to 5 for the Et-1 treated WKYRs and n = 3 to 4 for the sham SHRs and n = 4 to 5 for the Et-1 treated SHRs). *Significant difference between WKYRs and SHRs. $ Significant difference between sham and Et-1 treated animals. ns: no significant difference between WKYRs and SHRs.