Figure 4: BACE immunohistochemistry in the ischemic cortex seven days after tMCAo. (a) Representative photographs showing BACE immunoreactivity in the cortex. Scale bar represents 100 μm. Arrows indicate BACE-immunoreactive cells. (b) BACE-positive cells per 400x microscopic field in the cortex. Error bars denote SEM. In (b), , refers to the differences from the vehicle group ( ).