Figure 5: Effects of paeonol on apoptosis in the ischemic cortex seven days after tMCAo. (a) Representative photographs showing TUNEL staining in the ischemic cortex. Scale bar represents 100 μm. Arrows indicate TUNEL-positive cells. (b) TUNEL-positive cells per 400x microscopic field in the cortex. Error bars denote S.E.M. and , refer to the differences from the vehicle group ().