Results 81 to 90 of about 38,921 (268)

Sequence and expression analysis of potential spermatogenesis‐specific gene cognates in the Caribbean fruit fly, Anastrepha suspensa

open access: yesInsect Science, EarlyView.
Abstract The sterile insect technique (SIT) is a highly effective biologically‐based method for the suppression of many insect pest populations. SIT efficacy could be improved by methods of male sterilization that avoid the use of irradiation that can result in diminished fitness and mating competitiveness.
Alfred M. Handler   +3 more
wiley   +1 more source

Kinesin-5 Eg5 is essential for spindle assembly and chromosome alignment of mouse spermatocytes

open access: yesCell Division, 2020
Background Microtubule organization is essential for bipolar spindle assembly and chromosome segregation, which contribute to genome stability. Kinesin-5 Eg5 is known to be a crucial regulator in centrosome separation and spindle assembly in mammalian ...
Zhen-Yu She   +7 more
doaj   +1 more source

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

open access: yesAndrology, EarlyView.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas   +6 more
wiley   +1 more source

Triptolide Causes Spermatogenic Disorders by Inducing Apoptosis in the Mitochondrial Pathway of Mouse Testicular Spermatocytes

open access: yesToxics
Triptolide (TP) is a diterpenoid compound extracted from the traditional Chinese medicinal herb Tripterygium wilfordii. It has antitumor and anti-inflammatory effects and stimulates immunity.
Jiantao Zhao   +11 more
doaj   +1 more source

Male Hybrid Sterility in the Mule Duck is Associated with Meiotic Arrest in Primary Spermatocytes

open access: yesThe Journal of Poultry Science, 2013
Hybrid sterility is a postzygotic reproductive isolation mechanism that prevents successful interbreeding between different species. The mule duck, an intergeneric F1 hybrid between the domestic duck (Anas platyrhynchos) and Muscovy duck (Cairina ...
Fhamida B. Islam   +5 more
doaj   +1 more source

The use of deidentified organ donor testes for research

open access: yesAndrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova   +4 more
wiley   +1 more source

Reproductive biology of blue marlin (Makaira nigricans) in the western Pacific Ocean [PDF]

open access: yes, 2009
The reproductive biology of blue marlin (Makaira nigricans) was assessed from 1001 fish (ranging from 121 to 275 cm in eye-to-fork length; EFL) caught by Taiwanese offshore longliners in the western Pacific Ocean from September 2000 to December ...
Chien-Chung Tszeng, Chien-Chung Tszeng   +3 more
core  

Quantitative studies of nucleic acid in the cell by microspectrophotometry III. Nucleic acid contents in the cancer cells [PDF]

open access: yes, 1960
1. The DNA contents in mature lymphocytes of the mouse, rat and man are kept almost constant. 2. The variety in the DNA contents in tumor cells is attributed to the rapid DNA synthesis taking place at the interphase, though the degenerating cells and the
Utsumi, Kozo
core   +1 more source

Loss of Cx43 in Murine Sertoli Cells Leads to Altered Prepubertal Sertoli Cell Maturation and Impairment of the Mitosis-Meiosis Switch. [PDF]

open access: yes, 2020
Male factor infertility is a problem in today's society but many underlying causes are still unknown. The generation of a conditional Sertoli cell (SC)-specific connexin 43 (Cx43) knockout mouse line (SCCx43KO) has provided a translational model ...
Behr, Rüdiger   +10 more
core   +1 more source

Testis: Spermatocytic seminoma [PDF]

open access: yesAtlas of Genetics and Cytogenetics in Oncology and Haematology, 2011
Note Classification of germ cell tumours has not been adapted uniformly in the world. Two classifications most commonly used are the modified WHO classification and the British Testicular Panel (BTTP) classification. In addition Grigor proposed in 1993 a new classification based on biological features, and it was suggested in the AFIP Atlas of Tumor ...
openaire   +3 more sources

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