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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...
The possibility of stimulating the recovery of spermatogenesis after irradiation using hormone treatment was tested in LBNF, rats. At 10 weeks after irradiation with 3.5 Gy, the percentage of tubu...
We have developed a new method that allows isolation of highly purified type A spermatogonia from prepubertal rats. The procedure is based on the maximal release of spermatogonia from the seminifero...
The objective of the present study was to provide a morphological characterization of spermatogenesis following germ cell transplantation into the seminiferous tubular lumen of another mouse. The re...
Seminal quality, including the number of spermatozoa in the ejaculate, varies among breeds of boars. Variation in seminal quality may be explained by breed differences in testicular size and compo...
Studies of protection of testicular function from cyclophosphamide with hormonal pretreatment have been limited by the lack of a convenient model for cyclophosphamide-induced inactivation of stem ...
Charles River CD rats (approximate weight, 208 g) were exposed to 1.0% 2,5-hexanedione (2,5-HD) in drinking water for 5 weeks. Rats were killed 27, 60, and 75 weeks after exposure to evaluate the re...
Members of the Notch gene family have been shown to play an important role in the control of cell fate in many developmental systems. We hypothesized that the fate of the male germ line stem cells m...
In the mammalian testis, type A spermatogonia proliferate and differentiate into sperm under the tight control of both endocrine and paracrine factors. In order to study the complex process of sperm...
The aim of this study was to develop a cryopreservation protocol for type A spermatogonia. Testes from 5- to 7-month-old calves were collected, and type A spermatogonia were isolated using two-step ...

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