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In vivo sperm penetration and in vitro sperm migration tests
(Elsevier, 1973)
Two standardized techniques for in vivo and in vitro clinical evaluation of sperm migration are described. The in vivo test consists of postcoital sperm recovery, from the cervical canal and from the uterine cavity, with ...
Efeitos do tabagismo nos parâmetros seminais
(2002-05-01)
Objectives: We performed a study to evaluate the adverse effects of smoker patient on semen parameters. Material and Methods: We studied retrospective 238 semen specimen, 115 from men smoking and 123 from men nosmoking. ...
Efeitos do tabagismo nos parâmetros seminais
(2002-05-01)
Objectives: We performed a study to evaluate the adverse effects of smoker patient on semen parameters. Material and Methods: We studied retrospective 238 semen specimen, 115 from men smoking and 123 from men nosmoking. ...
In vitro action of progestogens on sperm migration in human cervical mucus
(Elsevier, 1975)
The presence of progestogens in the cervical mucus suppresses and arrests sperm penetration. Using the Kremer technique, the effects of in vitro released progesterone, d norgestrel, and cyproterone acetate were studied by ...
Ultrastructural analysis of spermiogenesis in the neotropical cichlid Cichla kelberi Kullander & Ferreira, 2006 (Perciformes: Cichlidae)
(Wiley-Blackwell, 2012-12-01)
In the Neotropical cichlid Cichla kelberi the spermiogenesis appears to be of the cystic type and is characterized by gradual chromatin condensation in juxtaposed clusters, nuclear rotation (with the flagellum perpendicularly ...
Ultrastructural analysis of spermiogenesis in the neotropical cichlid Cichla kelberi Kullander & Ferreira, 2006 (Perciformes: Cichlidae)
(Wiley-Blackwell, 2012-12-01)
In the Neotropical cichlid Cichla kelberi the spermiogenesis appears to be of the cystic type and is characterized by gradual chromatin condensation in juxtaposed clusters, nuclear rotation (with the flagellum perpendicularly ...
Ultrastructure of spermatogenesis, spermatozoon and processes of testicular regression and recrudescence in Eptesicus furinalis (Chiroptera: Vespertilionidae)
(Elsevier B.V., 2014-08-01)
Studies have shown that the annual reproductive cycle of Eptesicus furinalis includes at least one period of total testicular regression. Thus, this study aimed to evaluate their reproductive cycle ultrastructurally. The ...