Results 101 to 110 of about 10,170 (214)

Karyotype depends on sperm head morphology in some amniote groups

Frontiers in Genetics
The karyotype of an organism is the set of gross features that characterize the way the genome is packaged into separate chromosomes. It has been known for decades that different taxonomic groups often have distinct karyotypic features, but whether ...
Eric M. Kramer, Eric M. Kramer, Joshua Enelamah, Hao Fang, P. A. Tayjasanant   +4 more
doaj   +1 more source

Three-dimensional reconstruction of rat sperm using volume electron microscopy

Acta Biochimica et Biophysica Sinica
Three-dimensional (3D) reconstruction serves as a crucial instrument for the analysis of biological structures. In particular, a comprehensive and accurate 3D ultrastructural examination of rat sperm is vital for understanding and diagnosing male ...
Liu Jiazheng, Lin Limei, Zhang Lina, Ma Hongtu, Chen Xi, Pang Keliang, Li Linlin, Han Hua   +7 more
doaj   +1 more source

FBXO24 modulates mRNA alternative splicing and MIWI degradation and is required for normal sperm formation and male fertility

eLife
Spermiogenesis is a critical, post-meiotic phase of male gametogenesis, in which the proper gene expression is essential for sperm maturation. However, the underFlying molecular mechanism that controls mRNA expression in the round spermatids remains ...
Zhiming Li, Xingping Liu, Yan Zhang, Yuanyuan Li, Liquan Zhou, Shuiqiao Yuan   +5 more
doaj   +1 more source

Development of functional spermatozoa in mammalian spermiogenesis [PDF]

Miyata H., Shimada K., Kaneda Y., et al. Development of functional spermatozoa in mammalian spermiogenesis. Development 151, (2024); https://doi.org/10.1242/dev.202838.Infertility is a global health problem affecting one in six couples, with 50% of ...
Miyata, Haruhiko, Ikawa, Masahito, Kaneda, Yuki, Shimada, Keisuke   +3 more
core   +1 more source

Effects of immobilization on spermiogenesis [PDF]

, 1980
The influence of immobilization stress on spermiogenesis in rats was investigated. After 96 hour immobilization, histological changes began to manifest themselves in the form of practically complete disappearance of cell population of the wall of ...
Meitner, E. R.
core   +1 more source

Notes on reproduction of Cascade frogs from California

California Fish and Wildlife Journal, 2020
Stephen R. Goldberg
doaj   +1 more source

Ultrastructural aspects of spermiogenesis in Lynmaea auricularia (Gastropoda, Pulmonata) [PDF]

, 1973
This paper describes various ultrastructural aspects of spermiogenesis in Lymnaea auricularia.
Yatchmenoff, Barton Jon
core   +1 more source

Mismatch repair proteins and spermiogenesis [PDF]

, 2008
In human males, one of the major causes of infertility is the abnormal development of immature sperm into fully motile, mature forms. Abnormalities such as round sperm heads and kinked or coiled sperm tails are all correlated with infertility [1-3 ...
Shampeny, Katie Marie
core   +1 more source

PRAMEL12 orchestrates spermiogenesis to ensure male fertility in mice. [PDF]

J Biol Chem
Li N, Wang X, Li H, Wang Z.
europepmc   +1 more source

Testicular origin of epigenetic inheritance independent of sperm mitochondrial DNA and epididymal exposure. [PDF]

Proc Natl Acad Sci U S A
Wang Z, Yamauchi Y, Chen S, Zheng H, Ward MA, Yan W.   +5 more
europepmc   +1 more source