Results 11 to 20 of about 1,900,583 (232)

Evolution of Placentation in Eugongylini (Squamata: Scincidae): Ontogeny of Extraembryonic Membranes in Oviparous and Viviparous Species of New Zealand [PDF]

Journal of morphology
New Zealand scincid lizards, genus Oligosoma, represent a monophyletic radiation of a clade, Eugongylini, of species distributed geographically throughout the South Pacific with major radiations in Australia and New Caledonia.
James R. Stewart, Kelly M. Hare, Michael B. Thompson   +2 more
openalex   +2 more sources

Semiautonomous Development of the Extraembryonic Membranes in the Chicken Embryo

Poultry Science, 2006
Based on an old paradigm that the extra-embryonic membranes develop semiautonomously from the embryo, it can also be postulated that subembryonic fluid (SEF) will be formed semiautonomously against embryonic growth, because the formation of SEF is mediated by the yolk sac membrane.
Nadia Everaert, P. Coucke, Flip Bamelis, Bart Kemps, Bart De Ketelaere, V. Bruggeman, Josse De Baerdemaeker, Eddy Decuypere   +7 more
openalex   +4 more sources

Neural tube opening and abnormal extraembryonic membrane development in SEC23A deficient mice [PDF]

Scientific Reports, 2015
AbstractCOPII (coat protein complex-II) vesicles transport proteins from the endoplasmic reticulum (ER) to the Golgi. Higher eukaryotes have two or more paralogs of most COPII components. Here we characterize mice deficient for SEC23A and studied interactions of Sec23a null allele with the previously reported Sec23b null allele. SEC23A deficiency leads
Min Zhu, Jiayi Tao, Matthew P. Vasievich, Wei Wei, Guojing Zhu, Rami Khoriaty, Bin Zhang   +6 more
openalex   +4 more sources

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

Drug 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, Yue Cui, Curtis D. Klaassen   +2 more
openalex   +4 more sources

The Chicken Embryo: An Alternative Animal Model in Development, Disease and Pharmacological Treatment. [PDF]

Pharmacol Res Perspect
ABSTRACT To examine various medications and substances, in vivo models such as rats and mice are routinely used. However, it is utterly desirable to reduce extensive amounts of animals for these experimental models, which are costly and time‐consuming.
Kaplan-Arabaci O, Dančišinová Z, Paulsen RE.   +2 more
europepmc   +2 more sources

Expression of the Novel Basic Helix-Loop-Helix Gene eHAND in Neural Crest Derivatives and Extraembryonic Membranes during Mouse Development

Developmental Biology, 1995
We employed the yeast two-hybrid technique to screen a mouse embryo cDNA library for novel tissue-specific Class B basic helix-loop-helix (bHLH) transcription factors, which heterodimerize with the ubiquitously expressed Class A bHLH protein E12.
Peter Cserjesi, Doris Brown, Gary E. Lyons, Eric N. Olson   +3 more
openalex   +2 more sources

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

Journal 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

Expression of parathyroid hormone-related protein mRNA by uterine tissues and extraembryonic membranes during gestation in rats [PDF]

Journal of Reproduction and Fertility, 1993
Hybridization histochemistry and solution hybridization studies were performed to localize the expression of parathyroid hormone-related protein (PTHrP) during implantation in rats.
Felix Beck, J. Tucci, P. V. Senior
openalex   +2 more sources

Trophoblast biology: Forum introduction [PDF]

Reproductive Biology and Endocrinology, 2004
In mammals, a carefully orchestrated dialogue between the mother and conceptus (embryo/fetus and associate extraembryonic membranes) is initiated during the peri-implantation period of pregnancy as the trophoblast develops, functions to signal pregnancy ...
Bazer, Fuller W, Spencer, Thomas E
core   +5 more sources

Expression of calcium transport proteins in the extraembryonic membranes of a reproductively bimodal lizard

The FASEB Journal, 2011
Oviparous reptile eggs contain two sources of calcium to support embryonic growth and development: yolk and eggshell. Viviparous reptile eggs have attenuated shells that are not calcified, eliminating a source of embryonic calcium.
T. Ecay, S. Fregoso, Brent J. Linville, J. R. Stewart, B. Heulin   +4 more
semanticscholar   +2 more sources