title: A case of 48,XXYY--paternal origin of the extra X chromosome.
mesh_terms: D000293:Adolescent; D001789:Blood Group Antigens; D003878:Dermatoglyphics; D006801:Humans; D007621:Karyotyping; D008297:Male; D008938:Mitosis; D009061:Mouth Mucosa / Q000166:cytology; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations
chemical_list: D001789:Blood Group Antigens