title: [Slow virus infection].
mesh_terms: D003711:Demyelinating Diseases; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012897:Slow Virus Diseases / Q000175:diagnosis / Q000473:pathology