Results 161 to 170 of about 25,915 (289)

c‐Abl Plays an Important Role in Mouse Preimplantation Embryo Development and the Dysregulation Associated With Decreased mTERT Expression

open access: yesMolecular Reproduction and Development, Volume 92, Issue 6, June 2025.
ABSTRACT c‐Abl encodes a cytoplasmic and nuclear protein tyrosine kinase that has been implicated in processes of cell growth, proliferation, differentiation, division, and regulation of cytoskeletal structure. mTERT is a catalytic subunit of mouse telomerase and it is very important for controlling cell proliferation and homeostasis by maintaining ...
Ecem Yildirim, Tugce Onel, Aylin Yaba
wiley   +1 more source

Development of Loxosceles intermedia Mello-Leitão (1934) (Araneae, Sicariidae) genital tract

open access: yesBrazilian Journal of Biology
We examined the post-embryonic development of the male and female genital apparatus of the brown spider, Loxosceles intermedia. The development of the genital apparatus for both sexes begins with the appearance of inner structures.
A. Margraf   +5 more
doaj   +1 more source

Egg Pouches and Other Reproductive Structures in Pelagic Chaetognatha [PDF]

open access: yes, 1968
Some specimens of Eukrohnia bathyantarctica David from the collections obtained by the United States Antarctic Research Program were observed which had marsupial sacs full of eggs, and hanging from the opening of the oviducts. The eggs in the sacs, in
Alvarino, Angeles
core  

Poor developmental conditions decrease adult body size and egg size, but not egg laying rate and survival throughout adulthood: A long‐term experiment in a precocial bird

open access: yesJournal of Animal Ecology, Volume 94, Issue 6, Page 1231-1243, June 2025.
This research experimentally manipulated the quality of early‐life conditions in Japanese quail, and monitored individual performance over the complete adult lifespan under standardized conditions. It found that poor early‐life conditions decreased adult size and the size of the eggs that females lay, but did not lead to a reduced reproductive rate and
Oscar Vedder, Matteo Beccardi
wiley   +1 more source

On an instance of hermaphroditism in the Electric ray, Narcine timlei (Bloch and Schneider) [PDF]

open access: yes, 1973
A specimen of the electric ray, Narcine timlei, collected from the trawl catches at Rameswaram on 12th November 1971, was found to be a hermaphrodite. The specimen measured 402 mm In total length.
Nair, R V, Soundararajan, R
core  

Chemosensory signalling in human sperm is controlled by Ca2+ influx via CatSper and Ca2+ clearance via plasma membrane Ca2+ ATPases

open access: yesBritish Journal of Pharmacology, Volume 182, Issue 12, Page 2694-2712, June 2025.
Abstract Background and Purpose Loss of function of the sperm‐specific Ca2+ channel CatSper is a common channelopathy that causes male infertility. CatSper controls the intracellular Ca2+ concentration and, thereby, the motility of human sperm. Activation of CatSper by oviductal ligands evokes a transient Ca2+ increase, which entails changes in the ...
Leonie Herrmann   +11 more
wiley   +1 more source

Differential lectin binding patterns in the oviductal ampulla of the horse during oestrus [PDF]

open access: yes, 2005
We investigated the oligosaccharide sequence of glycoconjugates, mainly sialoglycoconjugates, in the horse oviductal ampulla during oestrus by means of lectin and pre-lectin methods such as the KOH-neuraminidase procedure to remove sialic acid ...
Acone, Franca   +7 more
core  

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