Results 151 to 160 of about 26,814 (193)

Retinoic acid and the control of dorsoventral patterning in the avian spinal cord

Developmental Biology, 2004
The development of neural subtypes in the dorsoventral (DV) axis of the vertebrate central nervous system (CNS) involves the integration of signalling pathways coupled with the combinatorial expression of homeodomain transcription factors.
Emily Gale, Malcolm Maden
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Perspectives on leaf dorsoventral polarity

Journal of Plant Research, 2010
Leaves occur in a vast array of shapes and sizes, with complex diversity contributing to optimization of the principal function of photosynthesis. The program of development from a self-renewing stem cell population to a mature leaf has been of interest to biologists for years.
Dóra, Szakonyi, Alexis, Moschopoulos, Mary E, Byrne   +2 more
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Dorsoventral patterning in Drosophila oogenesis

Current Opinion in Genetics & Development, 1994
Dorsoventral polarity in the egg chamber of Drosophila involves the localization of maternal gurken RNA to the dorsal side of the oocyte. The gurken protein has homology to secreted growth factors and may bind to the torpedo/DER receptor tyrosine kinase present on the adjacent follicle cells.
T, Schüpbach, S, Roth
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Palisade dorsoventral lavage for neglected peritonitis

The American Journal of Surgery, 1997
A modification of the procedure of laparostomy with palisade dorsoventral lavage for treating neglected peritonitis is described. It consists of adding a polyethylene foil to cover the intestines and thus avoiding the direct contact between them from one side, and the suction drains and the palisade laparostomy screen from the other.
J, Losanoff, K, Kjossev
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A common plan for dorsoventral patterning in Bilateria

Nature, 1996
Functional studies seem now to confirm, as first suggested by E. Geoffroy Saint-Hilaire in 1822, that there was an inversion of the dorsoventral axis during animal evolution. A conserved system of extracellular signals provides positional information for the allocation of embryonic cells to specific tissue types both in Drosophila and vertebrates; the ...
E M, De Robertis, Y, Sasai
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Axonal redirection at the dorsoventral intraretinal boundary

Journal of Comparative Neurology, 1989
AbstractCobaltous‐lysine applied to the goldfish optic nerve backfilled retinal ganglion cells and their axons. Confined to the ventronasal and ventrotemporal retina was a small population of retinal ganglion cells whose axons traveled dorsally and parallel to the retinal margin.
A D, Springer, K D, Morel, S L, Grobman, B R, Wilson   +3 more
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Segmentation and dorsoventral patterning in Tribolium

Seminars in Cell & Developmental Biology, 1996
Abstract Embryos of the red flour beetle,Tribolium castaneum, develop from a short germ rudiment, composed of terminal, head, and thoracic primordia covered by extra-embryonic membranes. In contrast, forDrosophila melanogaster, the entire body plan is contained within a long germ band and the extra-embryonic membranes are reduced to a patch of cells ...
S BROWN, R DENELL
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[The dorsoventral inversion: An attempt of synthesis].

Morphologie : bulletin de l'Association des anatomistes, 2018
The invertebrates, with known exception of echinoderms, are hyponeurian and protostomian. By contrast, echinoderms, chordates and vertebrate are epineurian and deuterostomian. Convinced of the uniqueness origin of all species, Etienne Geoffroy Saint Hilaire (1772-1844), had postulated a complete inversion of body plan to explain this difference. He had
S, Louryan, N, Vanmuylder
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Dorsoventral Patterning of the Brain: A Comparative Approach

2009
Development of the central nervous system (CNS) involves the transformation of a two-dimensional epithelial sheet of uniform ectodermal cells, the neuroectoderm, into a highly complex three-dimensional structure consisting of a huge variety of different neural cell types.
Rolf, Urbach, Gerhard M, Technau
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Multiscale modeling of dorsoventral patterning in Drosophila

Seminars in Cell & Developmental Biology, 2014
The role of mathematical models of signaling networks is showcased by examples from Drosophila development. Three models of consecutive stages in dorsoventral patterning are presented. We begin with a compartmental model of intracellular reactions that generates a gradient of nuclear-localized Dorsal, exhibiting constant shape and dynamic amplitude.
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