title: Clinical aspects of abnormalities of the X and Y chromosomes.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D005260:Female; D006801:Humans; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics; D007962:Leukocytes; D008297:Male; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations; D014424:Turner Syndrome / Q000235:genetics