Results 101 to 110 of about 20,184 (239)

The Influence of Kebar Grass Infuse to Mice (Mus Musculus) Spermatogenesis [PDF]

open access: yes, 2014
This study was aim to examine the effect of grass infusion kebar (Biophytum petersianum) to increase the activity of spermatogenesis in male mice. This research was conducted at the Laboratory of Botany University Discourse Kristen Duta Yogyakarta ...
Lefaan, P. N. (Paula)
core   +3 more sources

La spermatide, cette méconnue [PDF]

open access: yesAndrologie, 1997
L'usage de la micro-insemination ovocytaire de spermatides rondes ou allongees, dans certains cas d'infertilite masculine, necessite de reconsiderer la sequence des modifications morphologiques et fonctionnelles qui surviennent durant la spermiogenese.
openaire   +1 more source

SOX30 Governs Synaptonemal Complex Assembly and Homologous Recombination in Male Meiosis

open access: yesCell Proliferation, EarlyView.
The transcription factor SOX30 directly binds promoter regions of SYCE1 and SYCE2 to mediate their transcriptional activation, thereby enabling proper assembly of central elements within the synaptonemal complex. Structural destabilisation of the synaptonemal complex in Sox30 KK spermatocytes triggers synaptic discontinuity, impairs homologous ...
Kangle Liu   +16 more
wiley   +1 more source

Ectoplasmic specialization: A friend or a foe of spermatogenesis? [PDF]

open access: yes, 2007
The ectoplasmic specialization (ES) is a testis-specific, actin-based hybrid anchoring and tight junction. It is confined to the interface between Sertoli cells at the blood-testis barrier, known as the basal ES, as well as between Sertoli cells and ...
Cheng, CY, Lee, WM, Mruk, DD, Yan, HHN
core   +1 more source

Distinct roles of two myosins in C. elegans spermatid differentiation.

open access: yesPLoS Biology, 2019
During spermatogenesis, interconnected haploid spermatids segregate undesired cellular contents into residual bodies (RBs) before detaching from RBs. It is unclear how this differentiation process is controlled to produce individual spermatids or motile ...
Junyan Hu   +7 more
doaj   +1 more source

Plasticity in the reproductive biology of Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake following lake trout Salvelinus namaycush invasion

open access: yesJournal of Fish Biology, EarlyView.
Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs   +3 more
wiley   +1 more source

Pengaruh Ekstrak Kulit Buah Naga Putih (Hylocereus Undatus) Terhadap Gambaran Mikroskopis Testis Mencit Galur Balb/c Yang Diberi Paparan Obat Nyamuk Bakar [PDF]

open access: yes, 2016
Latar Belakang : Obat nyamuk bakar yang menjadi pilihan utama untuk mencegah gigitan nyamuk di Indonesia, dapat mengakibatkan kerusakan berbagai organ termasuk testis.
Nabilah, H. (Husnia)   +1 more
core  

An atlas of chromatoid body components [PDF]

open access: yes, 2014
The genome of male germ cells is actively transcribed during spermatogenesis to produce phase-specific protein-coding mRNAs and a considerable amount of different noncoding RNAs. Ribonucleoprotein (RNP) granule-mediated RNA regulation provides a powerful
Chalmel, F.   +11 more
core   +3 more sources

Comparative description and discussion of spermiogenesis and spermatozoal ultrastructure in some species of Heptapteridae and Pseudopimelodidae (Teleostei: Siluriformes)

open access: yesNeotropical Ichthyology
The data obtained in the present study on spermiogenesis and spermatozoal ultrastructure of Pseudopimelodidae and Heptapteridae show that they share some characteristics, but greatly differ from each other. The main differences are the occurrence of type
Irani Quagio-Grassiotto   +3 more
doaj   +1 more source

Reproductive behaviour of the ocean triggerfish Canthidermis sufflamen (Tetraodontiformes: Balistidae) in the shallow waters of the marine‐protected area of El Hierro Island (Canary Islands)

open access: yesJournal of Fish Biology, EarlyView.
Abstract The abundance of Canthidermis sufflamen has increased worldwide, including around the Canary Islands, due to global ocean warming. The reproductive behaviour of this species was studied within a marine‐protected area (MPA) and its adjacent areas off the island of El Hierro (Canary Islands).
Alberto Rodríguez‐Díaz   +3 more
wiley   +1 more source

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