Progressive multifocal leukoencephalopathy and the "slow viruses".
D000328:Adult; D001921:Brain / Q000473:pathology; D002549:Diffuse Cerebral Sclerosis of Schilder / Q000150:complications / Q000209:etiology* / Q000473:pathology*; D006801:Humans; D007181:Inclusion Bodies, Viral; D007951:Leukemia, Myeloid / Q000150:complications; D008297:Male; D008854:Microscopy, Electron; D009457:Neuroglia; D027383:Papillomaviridae / Q000302:isolation & purification; D027382:Polyomaviridae; D014777:Virus Diseases