title: Additional chromosomal indication for the unicellular origin of chronic myelocytic leukemia.
abstract: In a female patient with chronic myelocytic leukemia (CML) the translocation 9q +; 22q  was constantly found to involve only the variant chromosome 9 with an unusually long secondary constriction. The finding indicates a unicellular origin of CML.
mesh_terms: D000328:Adult; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006570:Heterochromatin / Q000032:analysis; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000235:genetics*; D014178:Translocation, Genetic
chemical_list: D006570:Heterochromatin