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Showing 1 to 14 of 14 for “"Gastrula"”.
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Redefining the Gastrula Organiser in Early Chick Embryo Development
… explants of the neural plate at late gastrula stage appear to have already undergone AP patterning, yet the node-derived axial mesoderm retains the ability to induce distinct types of neural tissue found along the AP axis. In other model organisms, the absence of axial mesoderm …
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Vital Dye Mapping of the Gastrula and Neurula of Xenopus Laevis
Made available in DSpace on 2014-12-14T16:11:05Z (GMT). No. of bitstreams: 1 7524338.pdf: 4227152 bytes, checksum: bb2a4d3e4821d7723ec6d405ec4a2773 (MD5) Previous issue date: 1975
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Inhibitory Control of Neural Differentiation in Explants of Rana Pipiens Gastrula Ectoderm
Made available in DSpace on 2014-12-04T22:46:13Z (GMT). No. of bitstreams: 1 6003902.pdf: 2144297 bytes, checksum: 284a504d8631cde70d658a32de811242 (MD5) Previous issue date: 1960
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Deoxyribonuclease probing on sea urchin embryo chromatin
… endonuclease digestions of sea urchin gastrula chromatin have been analysed and it is shown that it is not possible to isolate large polynucleosomal chromatin complexes which are soluble in low ionic strength buffers. The nucleosomal DNA repeat lengths for sea urchin blastula, gastrula …
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Molecular Basis of Vertebrate Embryonic Migration
… field of embryology. Historically, the amphibian gastrula became one of the predominant models for experimental embryologists. This was partially due to the major influence of studies that lead to the eventual discovery of the organizer by Spemann and Mangold in 1924. After decades of research …
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Anteriore Musterbildung im Wirbeltierembryo - Die Induktion von Vorderhirn und Herz
… Im ersten Teil der Arbeit wurde die Rolle des Gastrula-Organisators der Maus als Quelle für Signale, die eine Neuralplatte mit anteriorer Identität induzieren können, untersucht. Die Initiierung der Vorderhirnanlage beruht im Säuger auf Signalen aus dem anterioren, primitiven Endoderm. Dennoch …
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Gene Activation in Early Amphibian Development
… for development beyond the late blastula stage. Gastrulation marks the beginning of rapid differentiation and diversification of cells to form the many tissues of the larval stage. The synthesis of messenger-like RNA is low during cleavage and increases from the late blastula or early gastrula …
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Endodermal Patterning in Xenopus laevis
… of some of these genes is observable at gastrula stages, during endoderm specification. These are the first early stable endodermal markers for different regions of the gastrula endoderm. This suggests that the earliest steps in endoderm patterning are concurrent with endoderm …
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Transcriptional divergence during cichlid embryogenesis
… but also from zygotic gene expression, with the gastrula stage showing the highest number of differentially expressed genes. Heterochronic genes are largely enriched for protein synthesis-related functions, which are expressed earlier in the generalist species, potentially contributing to its …
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The histone H1 of the sea urchin embryo, partial structures, enzymatic modifactions and developmental programme
… of the H1-variants present in the late gastrula embryo. The second part describes the determination of the partial primary structure of the three chromatographically separated H1-fractions: The amino acid composition and sequences of the H1-histone variants are compared to those of …
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Investigation of the roles of ion channels in the development of the sea urchin embryo
… activity as specifically required from early gastrula to the onset of late gastrula for normal skeletal patterning. Tricaine inhibits the voltage-gated sodium channel LvScn5a which is strongly expressed in the developing nervous system in pluteus larvae. We found that exogenous expression of …
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Characterization of cofilin and its potential role in the EphA4 pathway
… to the cessation of cellular crawl. During the gastrulation phase of embryonic development, individual cells are relocating to create the three primary germ layers of the organism. Failure of this process to occur results in attrition of the embryos, frequently by way of embryonic …
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How to build a chordate: Multiscale decomposition of axial morphogenesis in the amphioxus, Branchiostoma lanceolatum
… topology of tissues that emerges in the wake of gastrulation and defines the major anatomical patterns emerging in later development. For this reason, although there is remarkable anatomical diversity between adult chordates, they are all united by a common set of design principles. The epicentre …
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Shared Habitats: the MoverWitness Paradigm
This practice-led research thesis analyses and visualises central components of Authentic Movement, with particular reference to the work of Dr Janet Adler. By contextualising and comparing this improvisation method with modern, post-modern and contemporary movement practices the author describes …