Abstract Background The purpose of this study is to evaluate the prognostic factors for sperm retrieval and determine if Y chromosome deletion is associated with deleterious effects on spermatogenesis in non-mosaic Klinefelter patients. Whether Y chromosome deletion determines the sperm retrieval rate in non-mosaic Klinefelter patients has not yet been addressed. Methods We retrospect... https://www.roneverhart.com/5-5-Parlor-Palm-Artificial-Tree-in-White-Tower-Planter/