Results 71 to 80 of about 75,211 (286)

Development of extra-embryonic membranes and fluid compartments [PDF]

open access: yes, 2001
An account of the development of extra-embryonic membranes in the embryo of poultry. The roles of these membranes in the transfer of water from albumen to yolk and to embryonic tissue is ...
Baggott, Glenn K.
core  

Real‐time biosensing of Parkinson's disease biomarkers via NIR‐activated upconversion nanoparticles

open access: yesBMEMat, EarlyView.
Schematic illustration of the luminescence resonance energy transfer‐driven core‐shell‐shell UCNPs (cssUCNPs@Fluo4) nanoprobe for simultaneous monitoring of Ca²⁺‐temperature dynamics in Parkinson's disease models. Abstract Parkinson's disease (PD) is a progressive neurodegenerative disorder with incompletely understood pathophysiology, necessitating ...
Jialin Liu   +9 more
wiley   +1 more source

Cardiovascular ephrinB2 function is essential for embryonic angiogenesis [PDF]

open access: yes, 2002
EphrinB2, a transmembrane ligand of EphB receptor tyrosine kinases, is specifically expressed in arteries. In ephrinB2 mutant embryos, there is a complete arrest of angiogenesis.
Anderson, David J., Gerety, Sebastian S.
core  

Expression of mutant TIE2 p.L914F during mouse development causes embryonic lethality and defects in vascular remodeling

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Sporadic venous malformation (VM) is associated with the hyperactivating p.L914F mutation in TIE2, a receptor tyrosine kinase essential for vascular development. This mutation is not found in hereditary VM, suggesting incompatibility with life when expressed during early vascular development.
Lindsay J. Bischoff   +6 more
wiley   +1 more source

Longitudinal volumetric analysis of in ovo compartments in chicken eggs using ultra-high-field magnetic resonance imaging

open access: yesFrontiers in Veterinary Science
IntroductionThe chicken egg, with its in ovo compartments, is a widely used and popular animal model in experimental studies. This study aimed to quantify the volumes of the yolk/yolk sac, amniotic fluid, and chicken embryo in ovo using non-invasive ...
Felix Streckenbach   +15 more
doaj   +1 more source

Gastric Adenocarcinoma with Yolk Sac Tumor Differentiation and Liver Metastasis of Yolk Sac Tumor Component

open access: yesCase Reports in Oncological Medicine, 2013
Gastric adenocarcinoma with yolk sac tumor (YST) differentiation has rarely been reported. We report a case of primary gastric adenocarcinoma with yolk sac tumor differentiation and liver metastases of the YST component in a 50-years-old patient.
Chhagan Bihari   +4 more
doaj   +1 more source

Reproduction, early development, and larval rearing strategies for two sponge-dwelling neon gobies, Elacatinus lori and E.colini [PDF]

open access: yes, 2018
A major goal of the aquaculture industry is to reduce collection pressure on wild populations by developing captive breeding techniques for marine ornamental species, particularly coral reef fishes.
Atema, Jelle   +3 more
core   +1 more source

Oogenesis and germinal bed morphology of the brown anole (A. sagrei)

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher   +12 more
wiley   +1 more source

Apolipoprotein B-related gene expression and ultrastructural characteristics of lipoprotein secretion in mouse yolk sac during embryonic development

open access: yesJournal of Lipid Research, 1999
In mice, the yolk sac appears to play a crucial role in nourishing the developing embryo, especially during embryonic days (E) 7–10. Lipoprotein synthesis and secretion may be essential for this function: embryos lacking apolipoprotein (apo) B or ...
Yuko Terasawa   +9 more
doaj   +1 more source

Infant mortality across species. A global probe of congenital abnormalities

open access: yes, 2019
Infant mortality, by which we understand the postnatal stage during which mortality is declining, is a manifestation and embodiment of congenital abnormalities.
Bois, Alex   +8 more
core   +2 more sources

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