Fig. 2From: Case report of a patient with progressive multifocal leukoencephalopathy under treatment with dimethyl fumarateHistological analysis of a brain biopsy from the right frontal lesion. (a) Enlarged nuclei containing viral inclusions (arrows). Hematoxylin and eosin. (b) Enlarged nuclei appear immunopositive when labeled with an antibody to JC-virus/SV40.Back to article page