Fig. 5
From: Intraparenchymal supratentorial arachnoid cyst: a case report
Microphotography of a pathohistological section showing histological and immunohistochemical features of a delicate cystic structure lined by a flattened or cuboidal epithelium. Cystic wall stained with a hematoxylin and eosin, original magnification of × 100, b hematoxylin and eosin, original magnification of × 200. The epithelial cells showed no immunoreaction with glial fibrillary acidic protein (GFAP), c GFAP staining, original magnification of × 100, and strong positive reaction for epithelial membrane antigen (EMA), d EMA staining, original magnification of × 200