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Testicular hemodynamic changes after the surgical creation of a varicocele in the rat. Intravital microscopic observations
Testicular hemodynamic changes surgical creation varicocele rat
2009/2/23
The present study investigated the effect of a surgically induced varicocele on the dynamics of testicular blood flow. The surface vasculature of the normal and the varicocele-affected testis was ex...
Ultrastructural Observations on the Penetration of Human Sperm into the Zona Pellucida of the Human Egg In Vitro
ultrastructure zona pellucida human ova acrosome reaction
2009/2/19
Sperm penetration into the zona of 46 human eggs was examined by electron microscopy. Preovulatory oocytes were aspirated at laparoscopy and inseminated by methods which produced normal pregnancie...
Observations on Cyclic Nucleotides in Human Semen
semen cyclic AMP cyclic GMP adenylate cyclase fructose
2009/2/19
In agreement with earlier studies, we have found that the human seminal plasma yields considerably higher values for cyclic nucleotides when compared with spermatozoa. However, we have also show...
The results of 300 conventional vasovasostomies were evaluated clinically. The operations were carried out bilaterally under spinal or general anesthesia. Depending on the size of the nodule and the l...
Ultrastructural observations of spermatogenesis following transplantation of rat testis cells into mouse seminiferous tubules
Testis spermatogenesis transplant rat mouse
2009/2/17
The testes of busulfan-treated immunodeficient mice receiving seminiferous tubule injections of testis cells from rats were examined by light and electron microscopy. The presence of active rat sper...
Ultrastructural observations of spermatogenesis in mice resulting from transplantation of mouse spermatogonia
Testis mouse spermatogenesis electron microscopy
2009/2/16
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...