Trisomy 21 for the region 21q223: identification by high-resolution R-banding patterns.
D002675:Child, Preschool; D002871:Chromosome Banding; D002904:Chromosomes, Human, 21-22 and Y / Q000648:ultrastructure*; D004314:Down Syndrome / Q000175:diagnosis / Q000235:genetics*; D005260:Female; D014644:Genetic Variation; D006801:Humans; D007621:Karyotyping