title: Cytogenetic survey of 504 mentally retarded individuals.
mesh_terms: D000782:Aneuploidy; D002869:Chromosome Aberrations / Q000175:diagnosis*; D025063:Chromosome Disorders; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D002904:Chromosomes, Human, 21-22 and Y; D002905:Chromosomes, Human, 4-5; D003410:Cri-du-Chat Syndrome / Q000235:genetics; D012734:Disorders of Sex Development / Q000235:genetics; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics; D008297:Male; D009030:Mosaicism; D012729:Sex Chromosome Aberrations; D013022:South Carolina; D014314:Trisomy; D014424:Turner Syndrome / Q000235:genetics