Results 141 to 150 of about 3,723 (184)
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Fur1ctions of extraembryonic membranes
1990Abstract Several extraembryonic membranes arc interposed between the postimplantation mammalian embryo and the maternal tissue, and these subserve a variety of functions which together provide a well-regulated environment for embryo growth and development.
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Journal of Morphology, 2020
Abstract Amniote embryos are supported and nourished by a suite of tissues, the extraembryonic membranes, that provide vascular connections to the egg contents. Oviparous reptiles share a basic pattern of development inherited from a common ancestor; a vascular chorioallantoic membrane, functioning as a respiratory organ, contacts the
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Abstract Amniote embryos are supported and nourished by a suite of tissues, the extraembryonic membranes, that provide vascular connections to the egg contents. Oviparous reptiles share a basic pattern of development inherited from a common ancestor; a vascular chorioallantoic membrane, functioning as a respiratory organ, contacts the
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[Chromosomal mosaicism of extraembryonic cell membrane, detected during prenatal diagnosis].
Genetika, 1996Data on detection of chromosomal mosaicism in amnionic cells and chorionic villi obtained by prenatal cytogenic diagnosis are presented. The frequency of chromosomal mosaicism in preparations of amniotic fluid cell culture was 2.6% (6 out of 226), and that in "direct" villus preparations was 1.6% (13 out of 774).
T V, Zolotukhina, N V, Shilova
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The Journal of Parasitology, 1994
Little information is available describing the development of endoparasitic Hymenoptera prior to hatching of the first instar larva. The present study reveals that in Cotesia congregata, and likely other braconid wasp parasites, the serosa and amnion comprise separate layers encasing the developing first instar larva. Examination of newly hatched first
N E, Beckage, I, de Buron
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Little information is available describing the development of endoparasitic Hymenoptera prior to hatching of the first instar larva. The present study reveals that in Cotesia congregata, and likely other braconid wasp parasites, the serosa and amnion comprise separate layers encasing the developing first instar larva. Examination of newly hatched first
N E, Beckage, I, de Buron
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Journal of Morphology, 2021
Abstract Highly 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 ...
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Abstract Highly 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 ...
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Lipids, 2013
AbstractLysophosphatidic acid (lysoPtdOH), a lysophospholipid mediator, exerts diverse physiological effects, including angiogenesis, through its specific G‐protein‐coupled receptors. Previously, we showed that unfertilized hen egg white contains polyunsaturated fatty acid‐rich lysoPtdOH and lysophospholipase D (lysoPLD).
Junichi, Morishige +5 more
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AbstractLysophosphatidic acid (lysoPtdOH), a lysophospholipid mediator, exerts diverse physiological effects, including angiogenesis, through its specific G‐protein‐coupled receptors. Previously, we showed that unfertilized hen egg white contains polyunsaturated fatty acid‐rich lysoPtdOH and lysophospholipase D (lysoPLD).
Junichi, Morishige +5 more
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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 +11 more
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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 +11 more
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Journal of Experimental Zoology, 1969
AbstractThe induction of typical epidermis from the chick chorionic epithelium (CE) was studied with the following methods: (a) Grafting of 15‐day scale dermis (tarsometatarsal dermis) directly onto 9‐day host‐chorioallantoic membrane (CAM). (b) Grafting of a recombinant composed of 9‐day CE and 15‐day scale dermis onto 9‐day host‐CAM.
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AbstractThe induction of typical epidermis from the chick chorionic epithelium (CE) was studied with the following methods: (a) Grafting of 15‐day scale dermis (tarsometatarsal dermis) directly onto 9‐day host‐chorioallantoic membrane (CAM). (b) Grafting of a recombinant composed of 9‐day CE and 15‐day scale dermis onto 9‐day host‐CAM.
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Gas diffusion electrodes and membranes for CO2 reduction electrolysers
Nature Reviews Materials, 2021Eric W Lees +2 more
exaly
Designing anion exchange membranes for CO2 electrolysers
Nature Energy, 2021Danielle A Salvatore +2 more
exaly