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 2078 for “"phenotypic"”.
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Phenotypic characterization of stress Leukocytosis
The present thesis describes research that characterizes the mobilization of cytotoxic T cell subsets and monocyte populations in response to acute psychological stress and β-agonist (isoproterenol) infusion. Chapter two showed that γδ T cells are mobilized in response to psychological stress and …
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Mapping phenotypic traits in swine
The Illinois Meat Quality Pedigree (IMQP), a three-generation Berkshire x Duroc resource population, was created to discover quantitative trait loci (QTL) influencing carcass composition, growth, and meat quality traits in pigs. Each animal in the IMQP population was genotyped for 137 …
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Phenotypic variation in Photorhabdus temperata K122
… spp. have the ability to exist in either of two phenotypically different forms. The bacterial form isolated from the nematode is referred to as the primary phenotype variant, whilst the phenotypically different form is referred to as secondary phenotype variant. This secondary variant is isolated …
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Natural genetic and phenotypic variation for aging
… of aging in populations, both genetically and phenotypically. Historically, two main approaches have been used to try and understand how and why we age, including evolutionary and mechanistic approaches. Evolutionary approaches to studying aging have largely utilized demography, population and …
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Phenotypic and Genotypic characterisation of Bacillus sporothermodurans
… strains. When observing B. sporothermodurans phenotypically, for the first time, short appendage like structures were present protruding from the spore coat which may explain attachment to steel pipe surface resulting in post and cross contamination in UHT milk. A further investigation would …
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THE EVOLUTION OF PHENOTYPIC PLASTICITY IN BUTTERFLIES
Phenotypic plasticity is the ability of an organism to have distinct phenotypes in response to environmental cues. Early work in insects implicated changes to hormone titers as key molecular mediators of plasticity, but details on how the environment alters the development of traits via these …
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Developmental stress in birds: phenotypic and fitness
… environment they will soon inhabit and promote phenotypic changes which affect fitness. Increasing evidence suggests that physiological stress may be one such cue that conveys environmental information to developing animals. Here, I explore the short- and long-term consequences of developmental …
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Developmental stress in birds: phenotypic and fitness
… environment they will soon inhabit and promote phenotypic changes which affect fitness. Increasing evidence suggests that physiological stress may be one such cue that conveys environmental information to developing animals. Here, I explore the short- and long-term consequences of developmental …
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Phenotypic and genotypic analysis of intestinal spirochacies
Pulsed field gel electrophoresis of 82 intestinal spirochaete isolates showed specific differentiation of Serpulina pilosicoli and Serpulina hyodysenteriae although considerable heterogeneity was observed, especially amongst S. pilosicoli isolates. In several cases genotypically similar isolates …
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Phenotypic and genotypic characterisation of Clostridium Difficile
… aim of this thesis was to investigate both the phenotypic and genotypic characteristics of two populations of toxigenic clinical isolates of C. difficile which were recovered from two separate hospital trusts within the UK. Phenotypic characterisation of the isolates was undertaken using …
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Phenotypic characterization of hangover at the neuromuscular junction
Ethanoltoleranz beruht vermutlich auf Veränderung in synaptischer Plastizität; da die Mechanismen, die zu dieser Anpassung der Synapsen führen, in hang-Mutanten offensichtlich defekt sind, war es Ziel dieser Arbeit zu erklären, wie HANG zu synaptischer Plastizität beiträgt. In diesem Zusammenhang …
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Evolution and phenotypic diversification in serratia marcescens biofilms
… A key part of this process is the generation of phenotypic variants in the biofilm dispersal population. This thesis reports on the characterization of biofilm development of Serratia marcescens MG1, the analysis of the biofilm dispersal population, and the identification of the conditions that …
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Hypoxia-induced phenotypic modulation of human neuroblastoma cells
Neuroblastoma is a childhood tumour derived from cells of the sympathetic nervous system, which are arrested at low differentiation stages. Low differentiation stage and high tumour stage correlate to poor outcome. In earlier studies we have found that hypoxia induces dedifferentiation of …
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Phenotypic Characterization of Segmental Human Trabecular Meshwork Cells
Purpose: Aqueous humor outflow is segmental in the trabecular meshwork (TM) with regions of high-flow (HF) or low-flow (LF) that vary in molecular signature, biomechanics, and response to pressure in both normal and glaucoma eyes. We sought to investigate whether cells in these regions (1) deposit …
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The Influence of Phenotypic Variation on Criminal Judgement
… this study was to investigate the influence of phenotypic variation on criminal judgment. This study had two phases. In the first phase, participants rated multiple headshot photographs on the degree to which African American men possess pronounced Afrocentric features (fuller lips, broader …
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Adult Human Microglia: Phenotypic Diversity and Functional Complexity
… the adult human brain. This thesis explores the phenotypic diversity of microglia from adult human brain tissue – the primary microglia which are themselves part of neurological diseases. This study makes use of the unique resources of the Neurological Foundation of New Zealand Human Brain Bank …
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Phenotypic Switching of Bacterial Cells in Extreme Environments
<p>A large number of terrestrial microbial lives thrive in extremes of environmental conditions, including extremes of pressure, temperature, salinity, pH, and a combination of them. For example, all the marine biomass thrive at high hydrostatic pressure depending on depth. The temperature in the …
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Phenotypic, Physiological and Growth Interactions among Salmonella Serovars
<p>This thesis consists of four research parts: a literature review that covers <em>Salmonella</em> spp., one of the more prominent foodborne pathogens that represents a major risk to humans <strong>(chapter 1)</strong>. Understanding the growth of <em>Salmonella</em> serovars and strains is an …
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Environmental Variability and Phenotypic Flexibility in Plants (Illinois)
… will possess a greater ability to respond phenotypically to this variability than genotypes within species or populations that have evolved in habitats with less environmental variability. The phenotypic response quantified in this thesis is phenotypic flexibility, the growth advantage …
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Applying phenotypic phage selection to Chlamydia trachomatis infection
… Such mAbs can be identified by target based or phenotypic phage display. Here, phenotypic phage display was performed in two ways: (1) on a population of cells infected with *Ctr* or (2) on EB-enriched material derived from lysed, infected cells. In (1), panning for antigens was performed on the …
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