title: 46,XY,21qi-46,XY,21p- mosaicism in a child with Down's syndrome.
mesh_terms: D002675:Child, Preschool; D002869:Chromosome Aberrations; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome; D006801:Humans; D007621:Karyotyping; D008297:Male; D009030:Mosaicism; D014059:Tongue / Q000002:abnormalities