Results 121 to 130 of about 137,221 (140)
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Annual Review of Immunology, 1989
Presentation des elements du systeme immunitaire de Xenopus: systeme lymphoide, systeme d'histocompatibilite majeur, immunoglobuline. Le fonctionnement de ce systeme est considere (reponse immune, tolerance, diversite des anticorps) ainsi que son developpement.
Martin F. Flajnik +2 more
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Presentation des elements du systeme immunitaire de Xenopus: systeme lymphoide, systeme d'histocompatibilite majeur, immunoglobuline. Le fonctionnement de ce systeme est considere (reponse immune, tolerance, diversite des anticorps) ainsi que son developpement.
Martin F. Flajnik +2 more
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Alterations in the Xenopus retinotectal projection by antibodies to Xenopus N-CAM
Developmental Biology, 1988The patterned neural projection from the eye to the optic tectum of lower vertebrates (the retinotectal projection) has been proposed to be ordered by interactions between the optic nerve fibers and their surrounding tissues. To investigate the role of one such defined cell interaction, agarose implants containing antibodies to the neural cell adhesion
Fraser, Scott E. +4 more
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Neovascularization of the Xenopus embryo
Developmental Dynamics, 1997The receptor tyrosine kinase, Flk-1 or VEGFR-2, and its ligand, vascular endothelial growth factor (VEGF) are required for the development of the embryonic vasculature. Targeted disruption of either gene in mice results in the failure of vascular system formation.
Paul A. Krieg +4 more
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Journal of Molecular Biology, 1973
Abstract Ribosomal RNA synthesized by hybrid frogs from the cross between Xenopus laevis and Xenopus mulleri was analyzed by molecular hybridization with purified ribosomal DNA from each species. Although the 18 S and 28 S rRNA sequences are indistinguishable between these two species, the remaining 10% of the 40 S rRNA precursor molecule of each ...
Ronald H. Reeder, Tasuku Honjo
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Abstract Ribosomal RNA synthesized by hybrid frogs from the cross between Xenopus laevis and Xenopus mulleri was analyzed by molecular hybridization with purified ribosomal DNA from each species. Although the 18 S and 28 S rRNA sequences are indistinguishable between these two species, the remaining 10% of the 40 S rRNA precursor molecule of each ...
Ronald H. Reeder, Tasuku Honjo
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Husbandry of Xenopus tropicalis
2012Xenopus tropicalis combine the advantages of X. laevis, for example using explants and targeted gain of function, with the ability to take classical genetics approaches to answering cell and developmental biology questions making it arguably the most versatile of the model organisms. Against this background, husbandry of X.
Jafkins, Alan +4 more
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The transferrins from Xenopus laevis, Xenopus borealis and their hybrids
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1988Abstract 1. 1. The transferrins of Xenopus laevis and Xenopus horealis are polymorphic. Electrophoresis can distinguish between the two Xenopus species. Differences in electrophoretic mobility are not explained by differences in sialic acid or iron content of the molecule; they are of genetic origin. 2. 2. X.
Laurenne Petit +3 more
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2006
Amphibians have been used since the 19th century as vertebrate models for the experimentalist. Since 50 years or so, Xenopus laevis is the most widely used anuran amphibian research organism. However, because it is a pseudo-tetraploid species, its genetics has been lagging behind. Contemporary studies shift their focus to the only Xenopus species known
Pollet, N., Mazabraud, A.
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Amphibians have been used since the 19th century as vertebrate models for the experimentalist. Since 50 years or so, Xenopus laevis is the most widely used anuran amphibian research organism. However, because it is a pseudo-tetraploid species, its genetics has been lagging behind. Contemporary studies shift their focus to the only Xenopus species known
Pollet, N., Mazabraud, A.
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Expression of Xenopus T-box transcription factor, Tbx2 in Xenopus embryo
Development Genes and Evolution, 1999We report here the cloning and expression of the Xenopus orthologue of the T-box transcription factor gene Tbx2 (optomotor-blind in Drosophila). Tbx2 is first detected in the ventral mesodermal cells just above the yolk plug at late gastrula. At the neurula stage it is strongly expressed in the cement gland, dorsal root ganglia, and otic vesicle region.
Tadayoshi Hayata +3 more
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Studying Regeneration in Xenopus
2012For most Xenopus embryos, life is very short. The majority of research labs working with this model organism study the processes of early vertebrate patterning and morphogenesis. And quite rightly too, since over the last two decades labs across the world have provided the fate maps, animal cap assays, expression patterns, and functional screens that ...
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