Results 31 to 40 of about 33,731 (224)

Spermatogenesis and spermiogenisis in the testes of local Iraqi breed cat (Felis catus)

open access: yesThe Iraqi Journal of Veterinary Medicine, 2012
The seminiferous epithelium of the testes of cat consists of two groups of cells; Spermatogenic cells and Sertoli cells. The interstitial areas are filled with Leydic cells, blood and lymph vessels, and connective tissue.
AL-Samarrae N. S.
doaj   +1 more source

Gonad development and reproduction in the monoecious species Chlorophthalmus agassizi (Actinopterygii: Aulopiformes: Chlorophthalmidae) from the Sardinian Waters (Central-Western Mediterranean) [PDF]

open access: yes, 2010
Background. The shortnose greeneye, Chlorophthalmus agassizi Bonaparte, 1840, is a species with a circumglobal distribution and is among the most abundant commercial fishes in some Mediterranean areas.
Cabiddu S, Cau A, Follesa MC, Porcu C
core   +1 more source

A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]

open access: yes, 2016
Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo   +4 more
core   +2 more sources

Retinoic Acid Receptors Control Spermatogonia Cell-Fate and Induce Expression of the SALL4A Transcription Factor. [PDF]

open access: yesPLoS Genetics, 2015
All-trans retinoic acid (ATRA) is instrumental to male germ cell differentiation, but its mechanism of action remains elusive. To address this question, we have analyzed the phenotypes of mice lacking, in spermatogonia, all rexinoid receptors (RXRA, RXRB
Aurore Gely-Pernot   +10 more
doaj   +1 more source

Some Biochemical, Haematological and Histological Responses to a Long Term Consumption of Telfairia occidentalis-Supplemented Diet in Rats [PDF]

open access: yes, 2009
Some biochemical, haematological and histological responses were studied in rats undergoing a long term feeding with a Telfairia occidentalis-supplemented diet.
Iweala, E. E. J., Obidoa, O.
core   +1 more source

Doxorubicin and vincristine affect undifferentiated rat spermatogonia [PDF]

open access: yesReproduction, 2017
Anticancer drugs, such as alkylating agents, can affect male fertility by targeting the DNA of proliferative spermatogonial stem cells (SSC). Therefore, to reduce such side effects, other chemotherapeutics are used. However, less is known about their potential genotoxicity on SSC. Moreover, DNA repair mechanisms in SSC are poorly understood.
Beaud, Hermance   +2 more
openaire   +4 more sources

Pseudocercospora opuntiae sp. nov., the causal organism of cactus leaf spot in Mexico. [PDF]

open access: yes, 2006
Pseudocercospora opuntiae is newly described from Opuntia spp. from Mexico, where it causes a serious disease of this host. Although P. opuntiae is morphologically similar to other members of the genus with pigmented conidia and conidiophores, and ...
Ayala-Escobar , V.   +4 more
core   +7 more sources

Isolation and characterization of human spermatogonial stem cells

open access: yesReproductive Biology and Endocrinology, 2011
Background To isolate and characterization of human spermatogonial stem cells from stem spermatogonium. Methods The disassociation of spermatogonial stem cells (SSCs) were performed using enzymatic digestion of type I collagenase and trypsin.
Liu Shixue   +3 more
doaj   +1 more source

CG6015 controls spermatogonia transit-amplifying divisions by epidermal growth factor receptor signaling in Drosophila testes

open access: yesCell Death and Disease, 2021
Spermatogonia transit-amplifying (TA) divisions are crucial for the differentiation of germline stem cell daughters. However, the underlying mechanism is largely unknown.
Jun Yu   +9 more
doaj   +1 more source

WIN18,446 enhances spermatogonial stem cell homing and fertility after germ cell transplantation by increasing blood-testis barrier permeability

open access: yesThe Journal of Reproduction and Development, 2023
Spermatogonial stem cells (SSCs) possess a unique ability to recolonize the seminiferous tubules. Upon microinjection into the adluminal compartment of the seminiferous tubules, SSCs transmigrate through the blood-testis barrier (BTB) to the basal ...
Hiroko MORIMOTO   +2 more
doaj   +1 more source

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