title: Selective involvement of cells carrying extra chromosomes 21 in a child with acute non-lymphocytic leukaemia.
mesh_terms: D000782:Aneuploidy; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics; D006801:Humans; D007223:Infant; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D008297:Male; D014314:Trisomy