title: Absence of the 9q plus chromosome in Ph1 negative chronic myelogenous leukaemia.
mesh_terms: D000328:Adult; D000368:Aged; D001854:Bone Marrow Cells; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D013194:Staining and Labeling