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.
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Showing 1 to 20 of 70 for “"epidermal cells"”.
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Cytoskeletal Development In The Epidermal Cells Of An Insect, Calpodes Ethlius Stoll (lepidoptera:hesperiidae)
… by examining the shape changes of individual epidermal cells. I have found that removal of the basal lamina from the epidermis allows the shape and basal surfaces of these cells to be seen by scanning electron microscopy. In the 5th larval stage of Calpodes ethlius the cells extend basal …
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Molecular analysis of thecDNA and gene for a major protein from flexible cuticles of the giant silkmoth Hyalophora cecropia
… since there are persistent populations of epidermal cells that secrete the cuticular proteins during metamorphosis. An oligonucleotide probe, designed from N-terminal protein sequence, was used to screen a cDNA library made using mRNA of larval abdominal epidermal cells. A cDNA clone …
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Design and quantification of a tissue type specific genetic circuit in plants
… control expression in Arabidopsis thaliana root epidermal cells. The circuit design uses an externally applied ligand that activates a computationally designed transcriptional response driven by a tissue specific promoter to control output (GFP expression). In addition, I engineered a circuit …
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Δnp63 Regulates A Complex Network of Target Genes In Limb and Epidermal Development
… and continuous turnover is mediated by stem cells in the basal layer. p63 is structurally and functionally related to p53. In spite of their structural similarities, p63 is critical for the development and maintenance of stratified epithelial tissues, unlike p53. p63 is highly expressed in …
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Molecular Analysis of acDNA and Gene Encoding a Protein From Rigid Cuticles of the Giant Silkmoth, Hyalophora Cecropia
… It is secreted by a persistent population of epidermal cells with a dramatically different spatial distribution between the larval and pupal stages. There is reason to believe that its expression is regulated by juvenoids and ecdysteroids, making this an attractive model system in which to …
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Investigating The Roles of The P63 Isoforms In The Microrna Biogenesis Pathway
… knock out mice. Using these mice and tissues and cells from these mice we have found that <em>TAp63</em> transcriptionally regulates <em>Dicer</em> while <em>ΔNp63</em> transcriptionally regulates <em>DGCR8</em>. <em>TAp63<sup> -/-</sup></em> mice are highly tumor prone. These mice develop …
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The isolation and characterization of common lambsquarters cuticles and the effect neodol surfactants on the penetration of bentazon and glyphosate
… isolation of leaf cuticles, which include epidermal cells, without structural alterations of the adaxial and abaxial surfaces. Penetration of bentazon through isolated cuticles was monitored using a cuticle penetration apparatus developed to conserve the effects of droplet drying on …
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Evolution of stomata in mosses (Bryophyta): From molecules to form and function
… of mosses are not as structurally distinct from epidermal cells as are tracheophyte stomata. Anatomical features such as the presence of a cuticle, water-conducting cells, and spongy tissues with large areas for gas exchange are more pronounced in Oedipodium sporophytes and support the role of …
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ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΩΝ ΚΥΤΤΑΡΩΝ LANGERHANS ΣΤΗΝ ΕΠΟΥΛΩΣΗ ΤΡΑΥΜΑΤΟΣ. ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ ΣΕ ΛΕΥΚΟΥΣ ΕΠΙΜΥΣ
LANGERHANS CELLS ARE EPIDERMAL CELLS AND WERE DESCRIBED BY P. LANGERHANS IN 1868. FOR SOME TIME AFTER THEIR DISCOVERY, THEIR ORIGIN, NATURE AND FUNCTIONS REMAINED UNKNOWN. THE AIM OF THIS STUDY WAS TO DETERMINE (1) THE QUANTITATIVE DISTRIBUTION OF LANGERHANS CELLS DURING THE HEALING PROCESS OF …
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Guard Cell Regulation of Stomatal Response: Chloroplast Function and Abscisic Acid Metabolism in Guard Cells of Commelina Communis and Vicia Faba
… evaluated for obtaining viable, purified guard cells by sonication of epidermal peels of Vicia faba L. and by treatment at pH 4 of epidermal peels of Commelina communis L. The guard cells were free of mesophyll cells and chloroplasts and of living epidermal cells as shown by fluorescence …
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The Barrier Properties of the Skin of Aquatic and Semi-Aquatic Vertebrates
… the tight junction (TJ) complex that links skin epidermal cells. TJ proteins have been examined in mammalian skin but little is known about skin TJ proteins of vertebrates residing permanently or semi-permanently in water. This thesis provides new insights into the effect of abiotic and biotic …
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Epidermis and Re-epithelialization in <i>Schmidtea mediterranea</i>
Epidermal layer is crucial for organism’s survival as its ability to close the wound is essential for tissue recovery. Planarian epidermis enables animal recovery and survival after virtually any body part amputation. Nevertheless, neither the epidermis nor the mechanisms endowing such a remarkable …
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Identification and analysis of genes involved in cotton fibre initiation.
… fibres are single-celled hairs, arising from the epidermal surface of the cotton ovule. One factor in determining the length of the mature cotton fibre is the timing of fibre initiation, which is therefore a crucial step in obtaining commercial cotton fibres. To achieve a greater understanding of …
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White apple leafhopper affects apple fruit quality and leaf gas exchange
… in close proximity to stomata. Groups of cells in the palisade layers were empty, or contained coagulated cell contents; adjacent palisade cells were apparently uninjured. These uninjured cells contained an abundance of starch granules, however, possibly indicating that they were not …
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Damage-Induced Inflammation and Nociceptive Hypersensitivity In Drosophila Larvae
… and nervous systems. Immune-responsive blood cells fight infection and clear debris from damaged tissues, and specialized pain receptors become hypersensitive to promote behavior that protects the damaged area while it heals. To uncover the cellular and molecular mechanisms underlying these …
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An Ultrastructural Study of Fresh and Ensiled Alfalfa Using the Light and Transmission Electron Microscope
… (LM) showed starch localization in chlorenchyma cells. Transmission electron microscopy analysis showed starch localized in chloroplasts of chlorenchyma. Leaf cells averaged nine chloroplasts per cell section and eight starch granules per chloroplast section. Stem eel.ls averaged four …
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An investigation into the mechanism of toxicity of zinc oxide nanoparticles.
… their toxicity. Our in vitro results using human epidermal cells (A431), primary human epidermal keratinocytes and human liver cells (HepG2) demonstrated that cells exposed to ZnO NPs exhibit a decrease in cell viability which was independent of NP dissolution. ZnO NPs also induced oxidative DNA …
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Photosynthesis and certain morphological characteristics of alfalfa as affected by potassium nutrition
… as did stomatal number and aperture. Larger epidermal cells and greater numbers per leaf were observed with high K nutrition. Percent K in plants was associated with rate of K application. Net photosynthesis rates of excised leaves increased with potassium application, but all K levels had …
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Transcriptional Regulation of Profilin Is Required For Drosophila Larval Wound Closure
… postembryonic skin, wound closure requires that epidermal cells recognize the presence of a gap and change their behavior to migrate across it. In Drosophila larvae, wound closure requires two signaling pathways (the Jun N-terminal kinase (JNK) pathway and the Pvr receptor tyrosine kinase …
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An investigation into the synergistic action of chemotherapy and photodynamic therapy in resistant skin cancers
Melanoma is a form of skin cancer, arising from epidermal cells of the melanocyte lineage, which undergo a series of transformations and genetic alterations that may give rise to both pigmented and unpigmented melanoma. Melanoma represents 4% of all skin cancers but due to its aggressive nature, it …
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