Now showing items 21-30 of 973
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 ...
Characterization of gonadotropic cells during continuous and seasonal spermatogenesis of two freshwater fish species: a histochemical and immunohistochemical study
This work describes gonadotropic (GtH) cells and their morphological and immunohistochemical changes during the spermatogenic cycle of Serrasalmus maculatus (continuous spermatogenesis) and Pimelodus maculatus (seasonal ...
Histopathological and Histometrical Assessment of Boron Exposure Effects on Mouse Spermatogenesis
(Sociedad Chilena de Anatomía, 2007)
Effect of Flutamide in Mouse Spermatogenesis and on the Function of Seminal Vesicle and Prostate
(Sociedad Chilena de Anatomía, 2006)
Patterns of nucleolar activity during spermatogenesis of two triatomines, Panstrongylus megistus and P-herreri
(Univ Florence Botany Inst, 2014)
SPINDLE MEMBRANES DURING SPERMATOGENESIS IN DERMATOBIA-HOMINIS (DIPTERA, CUTEREBRIDAE)
(Journal Submicroscopic Cytology Pathology, 2014)
Ultrastructural characteristics of the spermatogenesis during the four phases of the annual reproductive cycle of the black myotis bat, Myotis nigricans (Chiroptera: Vespertilionidae)
Myotis nigricans is an endemic species of vespertilionid bat, from the Neotropical region, that resembles temperate zone bats in their reproductive cycle; presenting an annual reproductive cycle with two periods of testicular ...
Spermatogenesis and karyotypes of three species of water striders (Gerridae, Heteroptera).
Although they are of economic importance, there have been few cytogenetic studies of the Gerridae (Heteroptera) in Brazil. We examined spermatogenesis (meiosis and spermiogenesis) and nucleolar behavior in three species ...