title: A case of mosaic Down syndrome with 46,XY/47,XY, + 21/46,XY, + fragment cell lines.
mesh_terms: D000293:Adolescent; D002871:Chromosome Banding; D002877:Chromosomes, Human / Q000648:ultrastructure; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D007621:Karyotyping; D008297:Male; D009030:Mosaicism; D010641:Phenotype