title: Primary progressive multifocal leukoencephalopathy. A central nervous system disease caused by a slow virus.
mesh_terms: D001921:Brain / Q000473:pathology; D003711:Demyelinating Diseases / Q000209:etiology*; D004660:Encephalitis / Q000150:complications* / Q000209:etiology; D005260:Female; D006801:Humans; D007181:Inclusion Bodies, Viral; D007968:Leukoencephalopathy, Progressive Multifocal / Q000209:etiology / Q000473:pathology; D008854:Microscopy, Electron; D008875:Middle Aged; D009457:Neuroglia; D009897:Optic Chiasm / Q000473:pathology; D009900:Optic Nerve / Q000473:pathology; D012897:Slow Virus Diseases / Q000150:complications*