title: Letter: Duplication of 21 or 8-21 translocation in acute leukaemia.
mesh_terms: D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007621:Karyotyping; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D011379:Prognosis; D012008:Recurrence; D012075:Remission, Spontaneous