Spermatogenesis occurs in the seminiferous tubules, which harbor germ cells and Sertoli cells, within the testis 1. Sertoli cells (a kind of “nurse” cell) play a key role in regulating spermatogenesis ...
Klinefelter syndrome (KS) is caused by a 47,XXY karyotype [1] and has an estimated prevalence of 152 per 100,000 new-born boys [2] but with only around 25–40% ever receiving the diagnosis [3,4,5,6].
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