Ectodermal markers delineate the neural fold interface during avian neurulation
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چکیده
منابع مشابه
Methanol-induced neural tube defects in mice: pathogenesis during neurulation.
A spectrum of cephalic neural tube defects was observed in near-term (gestation day [GD] 17) mouse fetuses following maternal inhalation of methanol at a high concentration (15,000 ppm) for 6 hr/day during neurulation (GD 7-9). Dysraphism, chiefly exencephaly, occurred in 15% of fetuses, usually in association with reduction or absence of multiple bones in the craniofacial skeleton and ocular a...
متن کاملEctodermal patterning in the avian embryo
Max-Planck-Institut für biophysikalische Chemie, Abteilung Molekulare Zellbiologie, D-37077 Göttingen, Germany 1Present address: Howard Hughes Medical Institute, Department of Biological Chemistry, University of California, Los Angeles, California 90095-1737, USA 2Present address: Max-Planck-Institut für biophysikalische Chemie, Abteilung Molekulare Entwicklungsbiologie, D-37077 Göttingen, Germany
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Sequential thin-section, tracer (K-pyroantimonate, lanthanum, ruthenium red, and horseradish peroxidase), and freeze-fracture studies were conducted on embryos and larvae of Rana pipiens to determine the steps involved in gap junction assembly during neurulation. The zonulae occludentes, which join contiguous neuroepithelial cells, fragment into solitary domains as the neural groove deepens. Th...
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The kinetic behaviour of the cranial neuroepithelial cells of rat embryos during neurulation is described. Serial transverse sections of 4-, 8-, 12- and 16-somite-stage embryos show that differential mitosis does not play a part in the mechanisms responsible for effecting cranial neural tube closure. A constant cell number is found in the midbrain/hindbrain neural epithelium during all four sta...
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In the prospective lumbo-sacral region of the chick embryo, neurulation is achieved by cavitation of the medullary cord, a process called secondary neurulation. Neural crest cells (NCC) are generated in this region and they give rise to the same types of derivatives as in more rostral parts of the trunk where neurulation occurs by dorsal fusion of the neural plate borders (primary neurulation)....
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ژورنال
عنوان ژورنال: The Anatomical Record
سال: 2000
ISSN: 0003-276X,1097-0185
DOI: 10.1002/1097-0185(20000901)260:1<106::aid-ar120>3.0.co;2-x