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Decrease in the number of human Ap and Ad spermatogonia and in the Ap/ Ad ratio with advancing age. New data on the spermatogonial stem cell
human testis spermatogonia aging
2009/2/23
The numbers of Ap and Ad spermatogonia per unit section of the testis were calculated in autopsy specimens from young adults and elderly men without testicular pathology. The number of Ap spermatogo...
Changes in the endocrinological milieu after clomiphene citrate treatment for oligozoospermia：the clinical significance of the estradiol/testosterone ratio as a prognostic value
E5/T ratio clomiphene citrate male infertility
2009/2/12
We have already reported that the rate of increase in the estradiol/testosterone ratio (E2/T ratio) following human chorionic gonadotropin (hCG) injection has prognostic value in the treatment of olig...
Both the odds ratio and the relative risk compare the relative likelihood of an event occurring between two groups. The relative risk is easier to interpret and is consistent with general intuition....
Sperm Nuclear Histone to Protamine Ratio in Fertile and Infertile Men：Evidence of Heterogeneous Subpopulations of Spermatozoa in the Ejaculate
Sperm DNA male infertility
2008/12/24
Sperm protamine deficiency is observed in a subset of infertile men, suggesting that the relative histone to protamine ratio may be altered in the spermatozoa of these men. We measured the ratio of ...
The Ratio of Second to Fourth Digit Length in Azoospermic Males Undergoing Surgical Sperm Retrieval: Predictive Value for Sperm Retrieval and on Subsequent Fertilization and Pregnancy Rates in IVF/ICSI Cycles
Hox genes finger length azoospermia surgical sperm retrieval
2008/12/19
The differentiation of the urogenital system and the appendicular skeleton in vertebrates is under the control of Homeobox (Hox) genes. It has been shown that this common control of digit and gonad ...