title: X chromosome long arm deletion in a patient with Down's syndrome.
mesh_terms: D001345:Autoradiography; D002648:Child; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D007962:Leukocytes / Q000166:cytology; D009061:Mouth Mucosa / Q000166:cytology; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations; D014316:Tritium
chemical_list: D014316:Tritium