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a., b. Number of pJNK-positive cells in the PC of 9-months-old vehicle- (n = 8) and Ex-4-treated (n = 10) GK rats (a) and representative photomicrographs showing the effect (b). Scale bar 150 μm. c. Representative photomicrographs illustrating the increased phosphorylation of AKT in response to Ex-4 in the PC of GK rats. Scale bar 400μm. Bars indicate means ± SEM; **P < 0.01.
