title: Combined Klinefelter-Down syndrome or XXYY syndrome?
mesh_terms: D002467:Cell Nucleus; D002648:Child; D003878:Dermatoglyphics; D003937:Diagnosis, Differential; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005453:Fluorescence; D006801:Humans; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000175:diagnosis*; D008297:Male; D008938:Mitosis; D010641:Phenotype; D012729:Sex Chromosome Aberrations / Q000175:diagnosis*; D012730:Sex Chromosomes