title: Letter: Leukaemia and lower-motor-neuron disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D000690:Amyotrophic Lateral Sclerosis / Q000209:etiology* / Q000473:pathology; D000818:Animals; D001344:Autopsy; D005260:Female; D006801:Humans; D007951:Leukemia, Myeloid / Q000209:etiology* / Q000473:pathology; D051379:Mice; D008854:Microscopy, Electron; D009046:Motor Neurons; D012190:Retroviridae / Q000302:isolation & purification; D014777:Virus Diseases