Results 11 to 20 of about 168,606 (377)
Current Biology, 2017 Most organisms consist of two cell lineages - somatic cells and germ cells. The former are required for the current generation, and the latter create offspring. Male and female germ cells are usually produced during spermatogenesis and oogenesis, which take place in the testis and the ovary, respectively. Spermatogenesis involves the differentiation of
Hitoshi Nishimura, S. L'Hernault
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The Cytoskeleton in Spermatogenesis. [PDF]
Reproduction, 2019 As germ cells progress through spermatogenesis, they undergo a dramatic transformation, wherein a single, diploid spermatogonial stem cell ultimately produces thousands of highly specialised, haploid spermatozoa. The cytoskeleton is an integral aspect of
Jessica E. M. Dunleavy +3 more
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Review: Spermatogenesis in the bull. [PDF]
Animal, 2018 Spermatogenesis is a finely regulated process of germ cell multiplication and differentiation leading to the production of spermatozoa in the seminiferous tubules.
C. Staub, L. Johnson
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Human Reproduction, 1998 Spermatogenesis is a complex process involving mitotic cell division, meiosis and the process of spermiogenesis. The regulation of spermatogenesis involves both endocrine and paracrine mechanisms. The endocrine stimulation of spermatogenesis involves both follicle stimulating hormone (FSH) and luteinizing hormone, the latter acting through the ...
D M, de Kretser +4 more
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Functions of somatic cells for spermatogenesis in stallions
Journal of Animal Science and Technology, 2022 Spermatogenesis and testis development are highly structured physiological processes responsible for post-pubertal fertility in stallions. Spermatogenesis comprises spermatocytogenesis, meiosis, and spermiogenesis.
Muhammad Shakeel, Minjung Yoon
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Transcriptome profiling of developing testes and spermatogenesis in the Mongolian horse
BMC Genetics, 2020 Background Horse testis development and spermatogenesis are complex physiological processes. Methods To study these processes, three immature and three mature testes were collected from the Mongolian horse, and six libraries were established using high ...
Bei Li +8 more
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The molecular evolution of spermatogenesis across mammals
bioRxiv, 2021 The testis produces gametes through spermatogenesis and evolves rapidly at both the morphological and molecular level in mammals^ 1 – 6 , probably owing to the evolutionary pressure on males to be reproductively successful^ 7 .
Florent Murat +23 more
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Spermatogenesis and Cryptorchidism [PDF]
Frontiers in Endocrinology, 2014 Cryptorchidism represents the most common endocrine disease in boys, with infertility more frequently observed in bilateral forms. It is also known that undescended testes, if untreated, lead to an increased risk of testicular tumors, usually seminomas, arising from mutant germ cells.
Cobellis G +7 more
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Cells, 2022 Spermatogenesis is a complex and continuous process of germ-cell differentiation. This complex process is regulated by many factors, of which gene regulation in spermatogenic cells plays a decisive role.
Yanan Li +11 more
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Oestrogens and spermatogenesis [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2010 The role of oestrogens in male reproductive tract physiology has for a long time been a subject of debate. The testis produces significant amounts of oestrogenic hormones, via aromatase, and oestrogen receptors (ERs)α (ESR1) and ERβ (ESR2) are selectively expressed in cells of the testis as well as the epididymal epithelium, depending upon species ...
Carreau, Serge, Hess, Rex A.
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