Results 81 to 90 of about 3,589 (156)

Puberty in male collared peccary (Pecari tajacu) determined by quantitative analysis of spermatogenic cells. [PDF]

, 2015
Estudos biológicos são necessários para o manejo da vida silvestre em cativeiro, e o conhecimento da reprodução é um dos aspectos importantes para o aumento da produção.
ALBUQUERQUE, N. I. de, CARDOSO, D. de L., FERREIRA, M. A. P., GUIMARÃES, D. A.   +3 more
core   +1 more source

The absence of both RIBC1 and RIBC2 induces decreased sperm motility and litter size in male mice

Andrology, Volume 14, Issue 2, Page 545-554, February 2026.
Abstract Background RIBC1 (RIB43A domain with coiled‐coils 1) and RIBC2 (RIB43A domain with coiled‐coils 2) are homolog proteins of RIB43a which is localized to microtubules in the cilia and flagella of unicellular organisms. Cryo‐electron microscopy and artificial intelligence studies showed that RIBC1 and RIBC2 are microtubule inner proteins (MIPs ...
Kento Katsuma, Keisuke Shimada, Shingo Tonai, Daisuke Mashiko, Rie Iida‐Norita, Yuki Kaneda, Haruhiko Miyata, Masahito Ikawa   +7 more
wiley   +1 more source

The Transcriptional Cell Atlas of Testis Development in Sheep at Pre-Sexual Maturity

Current Issues in Molecular Biology, 2022
Sheep testes undergo a dramatic rate of development with structural changes during pre-sexual maturity, including the proliferation and maturation of somatic niche cells and the initiation of spermatogenesis.
Yi Wu, Tingting Guo, Jianye Li, Chune Niu, Weibo Sun, Shaohua Zhu, Hongchang Zhao, Guoyan Qiao, Mei Han, Xue He, Zengkui Lu, Chao Yuan, Jianlin Han, Jianbin Liu, Bohui Yang, Yaojing Yue   +15 more
doaj   +1 more source

Establishment and optimization of the two‐step induction system for generating primordial germ cell‐like cells from chicken embryonic stem cells

FEBS Open Bio, Volume 16, Issue 1, Page 161-177, January 2026.
This study optimizes a two‐step induction system to generate PGCLCs from chicken ESCs. The induced cells express germline markers and migrate to gonads in ovo, offering a novel approach for avian genetic resource conservation. Primordial germ cells (PGCs) are the progenitor cells of sperm and eggs.
Zeyu Li, XianShuai Xu, GuangZheng Liu, XiaoQian Lv, JiuZhou Song, HongYan Sun, YingJie Niu, QiSheng Zuo, Wei Han, BiChun Li, Kai Jin   +10 more
wiley   +1 more source

Ex Vivo Spatiotemporal Characterization of Spermatogenesis in Mouse Testicular Organoids

Advanced Science, Volume 13, Issue 4, 19 January 2026.
To date, in vitro spermatogenesis remains a challenge in reproductive medicine. In this study, Sun et al. developed a promising in vitro strategy to generate testicular organoids that enable germ cells from newborn mice to enter meiosis, complete chromosome recombination and synapsis, and develop into haploid spermatids.
Jiachen Sun, Lifa Zhu, Yutong Li, Jinyan Tang, Tao Zhang, Hengjia Zhang, Wanchu Wang, Lufan Li, Shuhui Bian, Xin Wu   +9 more
wiley   +1 more source

Single-cell transcriptome analysis and in vitro differentiation of testicular cells reveal novel insights into male sterility of the interspecific hybrid cattle-yak

BMC Genomics, 2023
Background Interspecific hybridization plays vital roles in enriching animal diversity, while male hybrid sterility (MHS) of the offspring commonly suffered from spermatogenic arrest constitutes the postzygotic reproductive isolation.
TserangDonko Mipam, Xuemei Chen, Wangsheng Zhao, Peng Zhang, Zhixin Chai, Binglin Yue, Hui Luo, Jikun Wang, Haibo Wang, Zhijuan Wu, Jiabo Wang, Mingxiu Wang, Hui Wang, Ming Zhang, Hongying Wang, Kemin Jing, Jincheng Zhong, Xin Cai   +17 more
doaj   +1 more source

Analysis of Uncharacterized mKiaa1211 Expression during Mouse Development and Cardiovascular Morphogenesis [PDF]

, 2019
Mammalian Kiaa1211 and Kiaa1211-like are a homologous pair of uncharacterized, highly conserved genes cloned from fetal and adult brain cDNA libraries.
Conway, Simon J., Simmons, Olga, Snider, Elizabeth, Snider, Paige L.   +3 more
core   +1 more source

Exploring the Impact of In Ovo Injection of Flavonoid‐Based Aromatase Inhibitors on Gonadal Histology Differentiation in Ross 308 Broiler Chickens

Veterinary Medicine and Science, Volume 12, Issue 1, January 2026.
This study aimed to evaluate the in ovo injection of nettle extract, mushroom extract and their mixture as natural anti‐aromatase on sex reversal, histological changes in ovaries and testes and carcass characteristics of Ross 308 broiler chickens. Sex differentiation in avian species A completely randomized block design used to allocate 500 fertilized ...
Ali Akbari‐Balajorshari, Majid Mottaghitalab, Navid Ghavi Hossein‐Zadeh, Fahimeh Mohammadghasemi   +3 more
wiley   +1 more source

Undifferentiated spermatogonia regulate Cyp26b1 expression through NOTCH signaling and drive germ cell differentiation

The FASEB Journal, 2019
ABSTRACT Cytochrome P450 family 26 subfamily B member 1 (CYP26B1) regulates the concentration of all–trans retinoic acid (RA) and plays a key role in germ cell differentiation by controlling local distribution of RA.
Parag A, Parekh, Thomas X, Garcia, Reham, Waheeb, Vivek, Jain, Pooja, Gandhi, Marvin L, Meistrich, Gunapala, Shetty, Marie-Claude, Hofmann   +7 more
openaire   +3 more sources

Single-cell transcriptome analyses reveal critical regulators of spermatogonial stem cell fate transitions

BMC Genomics
Background Spermatogonial stem cells (SSCs) are the foundation cells for continual spermatogenesis and germline regeneration in mammals. SSC activities reside in the undifferentiated spermatogonial population, and currently, the molecular identities of ...
Shuang Li, Rong-Ge Yan, Xue Gao, Zhen He, Shi-Xin Wu, Yu-Jun Wang, Yi-Wen Zhang, Hai-Ping Tao, Xiao-Na Zhang, Gong-Xue Jia, Qi-En Yang   +10 more
doaj   +1 more source