Duplication of part of the short arm of A1 in a case of erythroleukemia (M6).
D002869:Chromosome Aberrations / Q000473:pathology*; D025063:Chromosome Disorders; D002878:Chromosomes, Human, Pair 1 / Q000648:ultrastructure*; D006801:Humans; D004915:Leukemia, Erythroblastic, Acute / Q000235:genetics*; D008297:Male; D008875:Middle Aged