title: A near haploid clone: 24,XY, t (9; 22) (q34; q11) from a patient in blast crisis of chronic myeloid leukaemia.
abstract: Chromosome studies on bone marrow in a patient with chronic myeloid leukaemia (CML) revealed a mosaic picture with a dominant clone of 24,XY, t(9; 22) (q34; q11). This corresponded to a preponderance of minute blasts in smears of bone marrow aspirate. It is suggested that a haploidy event rather than progressive hypodiploid loss, is responsible for the genesis of the miniature blast cells.
mesh_terms: D001853:Bone Marrow / Q000648:ultrastructure; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D002999:Clone Cells; D005260:Female; D006238:Haploidy; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009030:Mosaicism; D014960:X Chromosome; D014998:Y Chromosome