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Showing 1 to 16 of 16 for “"limb regeneration"”.
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Some Hormonal and Mechanical Factors Affecting Limb Regeneration in Amphibia
Made available in DSpace on 2014-12-04T22:46:05Z (GMT). No. of bitstreams: 1 0025254.pdf: 2541232 bytes, checksum: e435cacf7ec52520c1e4daa3f2779eb1 (MD5) Previous issue date: 1957
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Effects of retinoic acid on ribosomal RNA gene expression during limb regeneration
… acid (RA) treated animals during the following limb regeneration stages: initial dedifferentiation (ID), medium bud (MB), notch (N), and 3-finger bud (3-FB). Xenopus nuclear rDNA and axolotl 16S mitochondrial rDNA fragments were used to detect rDNA and rRNA during regeneration. Nuclear rDNA was …
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Studying the Patterning Mechanisms and Cell Fates during Limb Regeneration in Ambystoma mexicanum
… patterning mechanisms and cell fates during limb regeneration in the axolotl. 1) It is crucial to understand the earliest events of patterning. Since it is technically challenging to study early events, we established single cell PCR. This new tool will allow us to obtain novel insight into …
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ΕΠΙΔΡΑΣΗ ΚΑΡΚΙΝΟΓΟΝΩΝ ΟΥΣΙΩΝ ΣΤΗΝ ΑΝΑΓΕΝΝΗΣΗ ΤΩΝ ΑΚΡΩΝ ΤΟΥ ΟΥΡΟΔΕΛΟΥΣ ΑΜΦΙΒΙΟΥ TRITURUS CRISTATUS
… CHEMICAL CARCINOGENS ON INFACT AND REGENERATING LIMBS OF ADULT TRITURUS CRISTATUS (AMPHIBIA URODELA). CARCINOGENIC SUBSTANCES WERE ADMINISTERED TO INTACT OR REGENERATING LIMBS,THE LAST BEING IN THREE REGENERATIVE STAGES CHOSEN AS FOLLOWS: STAGE A: WOUND HEALING, STAGE B: DEDIFFERENTIATION AND …
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Studies in Amphibian Limb Development and Regeneration
… to investigate the phenomenon of amphibian limb regeneration. However, these past experiments have not attempted to apply rigorous statistical methods to analyze specific whole limb and regeneration blastema events. The most interesting of these events are those that occur during the …
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Molecular Characterization of Early Dedifferentiation in Newt Forelimb Regeneration
… organs and tissues as adults, including the limbs. Limb regeneration occurs via the dedifferentiation of stump tissue and the formation of a blastema, which provides the majority of cells for the regenerate. Despite all that we have learned about dedifferentiation and blastema formation, the …
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"The use of retinoids and an in vivo ""affinophoresis"" assay to analyze the cellular basis of positional memory in regenerating axolotl limbs"
Amphibian limb regeneration blastema cells normally regenerate only those parts distal to the amputation plane, and have been shown to inherit an expressed memory of their position of origin, termed positional value, by developing autonomously when grafted away from their normal limb site, and by …
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Cellular principles of Xenopus appendage regeneration
… can regenerate their lost appendages, such as limbs and tails. To identify cellular principles driving this ability, I investigated Xenopus laevis tadpoles. Tadpoles can regrow their lost tails and limbs only at specific developmental stages, allowing comparative studies to determine principles …
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Identification and Classification of Novel Gene Products Involved in Development and Regeneration in Xenopus Laevis
… to characterize new molecular events in lens regeneration. Most of these genes are also expressed during lens development, illustrating the similarity between mechanisms of development and regeneration. A subset of genes; whose expression is up-regulated or initiated early during multiple …
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Cloning of actin genes from a genomic library of the newt, Notophthalmus viridescens
The regenerating urodele limb is a useful model system in which to study, in vivo, the controls of cell proliferation and differentiation. Techniques are available which enable one to experimentally manipulate mitogenic influences upon the blastema, as well the morphogenesis of the regenerating …
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The isolation, partial purification and preliminary characterization of a growth factor from chick embryo brains
… factor involved in nerve dependent amphibian limb regeneration. In addition, CBGF stimulates 3H-thymidine incorporation in chick embryo brain astrocytes in vitro. In this study, cultured chick embryo brain non-neuronal cells were employed in a bioassay to monitor CBGF activity throughout …
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Non-invasive characterization of bone tissue and modeling of bone at micron and sub-micron levels
… of using ultrasound to detect bone growth in a limb regeneration project. At the sub-micron level, bone consists of a single lamella which is formed by a collagen fiber network with fibers aligned in a preferentially oriented direction. We model such a fibrous network computationally using …
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Studying the Molecular Mechanisms for Generating Progenitor Cells during Tail Regeneration in Ambystoma mexicanum
… the molecular mechanisms that underlie urodele regeneration. Urodele amphibians (newts and salamanders) are among the few vertebrates with the remarkable ability to regenerate lost body appendages, like the limbs and the tail. Urodele tail and limb regeneration occurs via blastemal epimorphic …