title: G-group ring chromosome in a mentally subnormal girl.
mesh_terms: D000293:Adolescent; D000886:Anthropometry; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002904:Chromosomes, Human, 21-22 and Y; D003878:Dermatoglyphics; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D012730:Sex Chromosomes