THE XXYY VARIANT OF KLINEFELTER'S SYNDROME.
D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002875:Chromosomes; D006801:Humans; D007713:Klinefelter Syndrome; D008297:Male; D012730:Sex Chromosomes; D014998:Y Chromosome
CHROMOSOME ABNORMALITIES; KLINEFELTER'S SYNDROME