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What Is Klinefelter Syndrome?
Klinefelter syndrome is a trisomy of the sex chromosomes. Most commonly (around 82 percent of the time) there is an extra X ...
Men with Klinefelter syndrome have an extra X chromosome, meaning their genetic makeup is "47, XXY" instead of the usual "46, ...
About 15% of men with nonobstructive azoospermia have Klinefelter syndrome. The testes of men with the nonmosaic (47,XXY) form of this condition show only rare, focal areas of spermatogenesis ...