title: Chronic lymphocytic leukaemia in twin sisters: monozygous but not identical.
mesh_terms: D004247:DNA / Q000032:analysis; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007945:Leukemia, Lymphoid / Q000235:genetics*; D008875:Middle Aged; D014427:Twins; D014430:Twins, Monozygotic
chemical_list: D004247:DNA