Results 141 to 150 of about 1,906,437 (168)

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

The FASEB Journal, 2011
T. Ecay, S. Fregoso, Brent J. Linville, J. R. Stewart, B. Heulin   +4 more
semanticscholar   +2 more sources

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Placental development and expression of calcium transporting proteins in the extraembryonic membranes of a placentotrophic lizard

Journal of Morphology, 2012
AbstractPseudemoia pagenstecheri is a viviparous Australian scincid lizard in which the maternal–embryonic placental interface is differentiated into structurally distinct regions. The chorioallantoic placenta contains an elliptical‐shaped region, the placentome, characterized by hypertrophied uterine and embryonic epithelial cells supported by dense ...
Haley K. Stinnett, J. R. Stewart, T. Ecay, Rebecca A. Pyles, Jacquie F. Herbert, M. Thompson   +5 more
semanticscholar   +5 more sources

Ontogeny of the extraembryonic membranes of the oviparous lizard, Eumeces fasciatus (Squamata: Scincidae)

Journal of Morphology, 2000
Oviposited eggs of Eumeces fasciatus contain embryos in the limb bud stage. Amniogenesis is complete and two yolk sac membranes, vascular trilaminar omphalopleure (choriovitelline membrane) and bilaminar omphalopleure, enclose the yolk vesicle. A small allantoic vesicle contacts the chorion.
J. R. Stewart, J. D. Florian
semanticscholar   +4 more sources

Developmentally regulated expression of the cell-cell adhesion glycoprotein cell-CAM in peri-implantation mouse embryos and extraembryonic membranes

Developmental Biology, 1986
Ivan Damjanov, Andrea Damjanov, Caroline H. Damsky   +2 more
openalex   +2 more sources

Establishment of a rat placental cell line expressing characteristics of extraembryonic membranes.

Developmental Biology, 1987
A cell line was derived from midgestation chorioallantoic placental explants of the outbred Holtzman rat. The cell line was found to express characteristics of extraembryonic membranes and to grow when introduced into allogeneic hosts. Growth in allogeneic hosts was detected following intraperitoneal injection of the cells but not following ...
M. Soares, Kathleen D. Schaberg, C. Pinal, S. De, P. Bhatia, G. Andrews   +5 more
semanticscholar   +3 more sources

Integrin-Dependent Apposition of Drosophila Extraembryonic Membranes Promotes Morphogenesis and Prevents Anoikis [PDF]

Current Biology, 2004
Two extraembryonic tissues form early in Drosophila development. One, the amnioserosa, has been implicated in the morphogenetic processes of germ band retraction and dorsal closure. The developmental role of the other, the yolk sac, is obscure.By using live-imaging techniques, we report intimate interactions between the amnioserosa and the yolk sac ...
B. Reed, R. Wilk, F. Schöck, H. Lipshitz   +3 more
semanticscholar   +4 more sources

Protein synthesis by chick (Gallus domesticus) extraembryonic membranes

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1993
1. The protein synthesis in chorioallantoic membrane (CAM), amniotic membrane (AM) and yolk sac (YS) were studied by in vitro culture with 14C L-glutamic and immunoautoradiography. 2. The yolk sac synthesizes transferrin, alpha-fetoprotein (AFP) and serum albumin. These three proteins are also synthesized, but only in slight amounts, by AM.
Luis Sánchez Palazón, Antonio Rodríguez-Burgos   +1 more
openaire   +3 more sources

Developmental expression of carbonic anhydrase II in the extraembryonic membranes of oviparous and viviparous snakes

The FASEB Journal, 2010
Oviparous reptile embryos receive a significant proportion of their calcium from the eggshell. For chickens, ≥ 80% of hatchling calcium originates from the shell while for oviparous snakes the shell accounts for 20–25% of hatchling calcium. The chick chorioallantois, which lies just beneath the eggshell, expresses carbonic anhydrase II (CAII) late in ...
T. Ecay, S. Fregoso, Maleka Khambaty, J. R. Stewart   +3 more
semanticscholar   +2 more sources

Extraembryonic membrane development in a reproductively bimodal lizard, Lacerta (Zootoca) vivipara

Zoology, 2004
Reproductive mode has been remarkably labile among squamate reptiles and the evolutionary transition from oviparity to viviparity commonly has been accompanied by a shift in the pattern of embryonic nutrition. Structural specializations for placental transfer of nutrients during intrauterine gestation are highly diverse and many features of the ...
Stewart, James R., Heulin, Benoit, Surget-Groba, Yann   +2 more
openaire   +4 more sources

Structure and function of the extraembryonic membrane persisting around the larvae of the parasitoid Toxoneuron nigriceps

Journal of Insect Physiology, 2006
The embryo of Toxoneuron nigriceps (Hymenoptera, Braconidae) is surrounded by an extraembryonic membrane, which, at hatching, releases teratocytes and gives rise to a cell layer embedding the body of the 1st instar larva. This cell layer was studied at different developmental times, from soon after hatching up to the first larval moult, in order to ...
GRIMALDI, ANNALISA, Caccia, S., CONGIU, TERENZIO, Ferrarese, R., TETTAMANTI, GIANLUCA, RIVAS PENA, M., PERLETTI, GIANPAOLO, VALVASSORI, ROBERTO, Giordana, B., Falabella, P., Pennacchio, F., DE EGUILEOR, MAGDA ANNA   +11 more
openaire   +7 more sources