Hematoxylin and eosin staining of middle cerebral artery (MCA) sections and surrounding brain tissue following subarachnoid hemorrhage
. Images represent MCA and surrounding brain tissue (A) at 0, 1, 6 and 12 h following SAH. (B) High magnification of both MCA and brain tissue. Invading cells (suggesting neutrophils and leucocytes) were observed around MCA and under pia mater at 1 h post-SAH, which increased over time at 6 and 12 h (arrows) as compared to 0 h groups.