Results 11 to 20 of about 8,535 (205)

Prominent Expression of Xenobiotic Efflux Transporters in Mouse Extraembryonic Fetal Membranes Compared with Placenta [PDF]

open access: greenDrug Metabolism and Disposition, 2008
Fetal exposure to xenobiotics can be restricted by transporters at the interface between maternal and fetal circulation. Previous work identified transporters in the placenta; however, less is known about the presence of these transporters in the fetal membranes (i.e., yolk sac and amniotic membranes). The purpose of this study was to quantify mRNA and
Lauren M. Aleksunes   +2 more
openalex   +4 more sources

Extraembryonic Membranes and Placentation in the Mexican Snake Conopsis lineata

open access: hybridJournal of Morphology
ABSTRACTExtraembryonic membranes provide protection, oxygen, water, and nutrients to developing embryos, and their study generates information on the origin of the terrestrial egg and the evolution of viviparity. In this research, the morphology of the extraembryonic membranes and the types of placentation in the viviparous snake Conopsis lineata are ...
Cecilia de Dios‐Arcos   +1 more
openalex   +3 more sources

Adaptive variation in the development of extraembryonic membranes of gekkotan embryos: A meta‐analytical approach

open access: bronzeJournal of Morphology, 2021
AbstractHighly mineralized rigid‐shelled eggs characterize one lineage of gekkotans. In contrast, poorly mineralized flexible‐shelled eggs characterize basal lineages of gekkotans and all other squamates. Low oxygen permeability of rigid‐shelled eggs is associated with small eggs and hatchlings, and long incubation lengths compared to flexible‐shelled ...
Robin M. Andrews
openalex   +4 more sources

Extraembryonic Mesenchymal Stromal/Stem Cells in Liver Diseases: A Critical Revision of Promising Advanced Therapy Medicinal Products

open access: yesCells, 2022
Liver disorders have been increasing globally in recent years. These diseases are associated with high morbidity and mortality rates and impose high care costs on the health system.
Mohammad Amin Shahrbaf   +4 more
doaj   +1 more source

The involvement of the proamnion in the development of the anterior amnion fold in the chicken. [PDF]

open access: yesPLoS ONE, 2014
The amnion was one of the most important evolutionary novelties in the animal kingdom, allowing independence of water for reproduction and subsequent exploration of terrestrial habitats, and is therefore an important structure to understand evolution. We
Ana de Melo Bernardo   +1 more
doaj   +1 more source

Characterization of Serum Metabolome and Proteome Profiles Identifies SNX5 Specific for Pregnancy Failure in Holstein Heifers

open access: yesLife, 2022
Pregnancy loss predominantly occurs during the first 3–4 weeks due to fertilization failure or early embryonic losses in cattle. Insufficient biochemical communication between conceptus (embryo plus extraembryonic membranes) and endometrium has been ...
Kazuya Kusama   +7 more
doaj   +1 more source

Chorioallantoic Membrane Assay at the Cross-Roads of Adipose-Tissue-Derived Stem Cell Research

open access: yesCells, 2023
With a history of more than 100 years of different applications in various scientific fields, the chicken chorioallantoic membrane (CAM) assay has proven itself to be an exceptional scientific model that meets the requirements of the replacement ...
Dmytro Oliinyk   +4 more
doaj   +1 more source

Oldest preserved umbilical scar reveals dinosaurs had ‘belly buttons’

open access: yesBMC Biology, 2022
Background In egg-laying amniotes, the developing embryo is tethered to a number of the extraembryonic membranes including the yolk sac and allantois that deliver oxygen and nutrients and remove metabolic waste products throughout embryonic development ...
Phil R. Bell   +3 more
doaj   +1 more source

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