Results 91 to 100 of about 3,968 (166)

Effects of 17α‐Ethinylestradiol on Development and Gonadal Differentiation in the Estuarine Mummichog, Fundulus heteroclitus

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 2, Page 148-161, March 2026.
ABSTRACT In fish, sex determination and gonadal development are controlled by various genetic and environmental factors. In this study, experiments were conducted on the estuarine mummichog (Fundulus heteroclitus) to investigate gonadal differentiation following exposure to the synthetic estrogen, 17α‐ethinylestradiol (EE2).
Ibrahim Chehade   +5 more
wiley   +1 more source

Amniotic Mesenchymal Stromal/Stem Cell–Derived Extracellular Vesicles for Equine Chronic Degenerative Endometritis Treatment

open access: yesVeterinary Medicine and Science, Volume 12, Issue 2, March 2026.
Equine endometrium can develop progressive fibrotic and functional alterations, probably correlated with age and inflammatory insults that alter uterine microenvironment, creating hostile conditions for embryo implantation. Named chronic degenerative endometritis, this condition leads to reduced fertility in older mares. Extracellular vesicles secreted
Giulia Gaspari   +10 more
wiley   +1 more source

Preliminary Data Regarding the Physiological State of Alosa immaculata (Bennett, 1835) During Spawning Migration

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 1, February 2026.
ABSTRACT Reproductive migration in anadromous fish involves complex physiological adjustments to support intense metabolic and reproductive demands. In the case of Alosa immaculata, a key migratory species of the lower Danube River, these adaptations can be assessed through hematological and biochemical indicators.
Angelica Dobre   +3 more
wiley   +1 more source

Untargeted Metabolomics Reveals Seasonal and Tissue‐Specific Metabolic Shifts in Holothuria cinerascens

open access: yesChemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Untargeted metabolic profiling of three body tissues from Holothuria cinerascens in South Africa using 1H‐NMR and UPLC–QTOF–MS revealed distinct tissue‐specific and seasonal metabolic variations, with the body wall and gut/mesentery exhibiting high metabolite diversity.
Cassandra Upton   +3 more
wiley   +1 more source

Chronic Granulomatous Disease: Clinical and Molecular Characterization of Brazilian Patients

open access: yesThe Journal of Gene Medicine, Volume 28, Issue 2, February 2026.
Chronic granulomatous disease is a rare inborn error of immunity characterized by the deficient production of reactive oxygen species in phagocytes, which are used in pathogen elimination. Affected individuals become susceptible to severe infections.
Leonardo Martinello da Rosa   +4 more
wiley   +1 more source

The threshold of estradiol level for fresh embryo transfer differs between blastocyst and cleavage‐stage embryo

open access: yesActa Obstetricia et Gynecologica Scandinavica, Volume 105, Issue 2, Page 257-267, February 2026.
Our results suggested that the difference in pregnancy outcomes between fresh and frozen embryo transfer is related to the peak estradiol level and embryo transfer stage. The cutoff values for peak estradiol level for performing freeze‐all strategy to improve pregnancy outcomes were different for cleavage‐stage and blastocyst‐stage embryo transfer ...
Dingying Zhao   +12 more
wiley   +1 more source

Artificial intelligence‐powered microscopy: Transforming the landscape of parasitology

open access: yesJournal of Microscopy, Volume 301, Issue 2, Page 280-329, February 2026.
Abstract Microscopy and image analysis play a vital role in parasitology research; they are critical for identifying parasitic organisms and elucidating their complex life cycles. Despite major advancements in imaging and analysis, several challenges remain. These include the integration of interdisciplinary data; information derived from various model
Mariana De Niz   +4 more
wiley   +1 more source

The reproductive biology of Marathrum rubrum Novelo & C. T. Philbrick: morphological and anatomical changes during flower development

open access: yesBotan‪ical Sciences
Background: Podostemaceae is the largest family of strictly aquatic angiosperms. Species of this family possess unusual morphological and reproductive characters, grow attached to rocks in rivers with strong currents, and have a life cycle tightly ...
Diana Guzmán-Merodio   +4 more
doaj   +1 more source

Contemporary hybridization among Arabis floodplain species creates opportunities for adaptation

open access: yesNew Phytologist, Volume 249, Issue 3, Page 1542-1557, February 2026.
Summary Hybridization between closely related species is increasingly recognized as a major source of biodiversity. Yet, whether it can create advantageous trait combinations while purging harmful alleles remains unknown. To address this question, we studied Arabis nemorensis and Arabis sagittata, two endangered species that currently hybridize in a ...
Neda Rahnamae   +13 more
wiley   +1 more source

Pollen development under control and high-temperature stress: the role of plant hormones

open access: yesPlant Stress
Pollen grains, the sperm cell dispersal vectors, are essential for sexual reproduction and subsequent fruit and seed production. The developmental processes that release functional pollen at the precise stage and time to maximize pollination and ...
Dhirendra Fartyal   +2 more
doaj   +1 more source

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