Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Melanophores."”.
-
Signals Regulating Organelle Transport in Melanophores
… subunits of kinesin II are phosphorylated in melanophores, but were not observed to be differentially phosphorylated. The levels of kinesin II and dynein on aggregating or dispersing melanosomes remain constant.
-
Mechanisms and Regulation of Organelle Transport in Xenopus Melanophores
… by studying pigment granule motility in Xenopus melanophores. These dermal cells are able to cyclically transport pigment granules, termed melanosomes, either to aggregate to the cell center or disperse throughout the cell in response to hormonal stimulus to effect color changes in the animal. We …
-
Regulation of Bidirectional Microtubule-Dependent Organelle Transport in Xenopus Laevis Melanophores
… to study regulated transport is Xenopus laevis melanophores, which contain pigment-filled organelles termed melanosomes that can be aggregated to the perinuclear region or dispersed throughout the cytoplasm by the motor proteins kinesin-2, cytoplasmic dynein, and myosin V. While the motor …
-
The role of alpha-melanocyte stimulating hormone in environmentally induced color change.
… skin histology revealed numerous large dermal melanophores dispersed among iridophores. These ventral dermal melanophores are active components of R. chiricahuensis physiological color change.
-
Evolution of Endothelin Signaling and Diversification of Adult Pigment Patterns
… D. rerio exhibit several dark stripes of melanophores with sparse iridophores that alternate with light interstripes of dense iridophores and xanthophores. By contrast, the closely related species D. nigrofasciatus has an attenuated pattern with fewer melanophores, stripes and …
-
REGULATION OF NEURAL CREST DEVELOPMENT REQUIRES FUNCTIONAL INTERACTIONS BETWEEN HDAC1, TFAP2A AND FOXD3
… sox10 expression effects the specification of melanophores and DRG neurons and subsequently trunk neural crest cells undergo apoptotic cell death. Misexpression of sox10 is sufficient to rescue melanophores indicating that the genetic interaction between tfap2a and hdac1 is epistatic to sox10 …
-
Black and White: Structural and Functional Aspects of Dermal Chromatophores of the Marbled Whiptail Lizard (Cnemidophorus Marmoratus)
… chromatophores (xanthophores, iridophores, and melanophores). Here electron microscopy, brightfield microscopy, and reflectance spectroscopy is used to examine some of the structural-functional relationships of the chromatophores of these lizards with particular attention to the crystal …
-
Fate plasticity and reprogramming in genetically distinct populations of Danio leucophores
… of which arises by transdifferentiation of adult melanophores and another of which develops from a yellow–orange xanthophore or xanthophore-like progenitor. Single-cell transcriptomic, mutational, chemical, and ultrastructural analyses of zebrafish leucophores revealed cell-type–specific chemical …
-
Regulation of Organelle Transport by Myosin v in the Cell Cycle
… of motor-cargo association. Xenopus laevis melanophores are a convenient model system in which to study intracellular transport. The movement of pigmented organelles in these cells is controlled by three motors: two microtublule motors, cytoplasmic dynein and kinesin II, and the actin motor …
-
Desenvolvimento larval de quatro espécies de Symphurus Rafinesque, 1810 (Osteichthyes, Cynoglossidae) e sua distribuição na costa sudeste/sul do Brasil (23ºS-29ºS)
… fin-ray followed by four long rays. A pair of melanophores are visible on posterior dorsal and ventral margins of trunk since preflexion stage. Only this species has a c onical structure attached to the gut coil. s. kyaropterygiurn Menezes & Benvegnú, 1976 larvae also have one short fin-ray f …
-
Colouration evo-devo: the developmental basis of intra-specific variation in cichlid pigmentation
… oca2, a gene required for pigment synthesis in melanophores, as a candidate associated with egg-spot number variation. I present a study of A. calliptera egg-spot development and the developmental basis of intra-specific variation in egg-spot number. First, I characterise the development of …