Fig. 2
From: Progressive multifocal leukoencephalopathy in a patient with mediastinal teratoma: a case report
A Histopathology (hematoxylin & eosin). The figure shows typical demyelinating pattern with “bizarre-looking” astrocytes. High-power view of the eosinophilic nuclear inclusions. B Positive immunohistochemical stain (SV40) for polyomavirus