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 7 of 7 for “"Multicellular aggregates"”.
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Endogenous Stress Signaling within Human Multicellular Aggregates (Spheroids)
… (quiescence) by conversion to non-adherent multicellular aggregates. These "spheroids" can be maintained at room temperature under oxygen- and nutrient-deprived conditions for extended periods of time (weeks) as well as converted back to viable proliferating monolayers. Herein it is shown …
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Effect of Exopolysaccharides on Pseudomonas aeruginosa Physiology
Bacteria form multicellular aggregates called biofilms. Cells in biofilms are encased by aself-produced matrix composed of proteins, exopolysaccharides (EPS), nucleic acids, and lipids. Biofilm matrix composition mediates how bacteria interact with one another and their environments. The biofilm …
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Investigation of the Photoenhanced Reduction of Nitrogen Dioxide (NO2) on Organic Films and Above Soils as the Missing Source of Daytime Tropospheric Nitrous Acid (HONO)
… bacteria likely functioned as multicellular aggregates on the acidic HA substrate, producing a biofilm containing numerous chromophoric sensitizer units capable of photochemically reducing NO2 to HONO, defending the observed exponential dependence of HONO yield on irradiance …
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Effects of three-dimensional culture conditions on skeletal muscle myoblasts
… were examined as pre-aggregated single cells and multicellular aggregates in the Rotary Cell Culture System (RCCS). At the time intervals tested, RCCS cultured cells maintained viability and did not exhibit increased apoptosis markers such as Caspase 3 (activated) and phosphatydylserine. In …
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Investigating the Supracellular Processes Underlying Emergent Material Phase Properties During Embryonic Skin Morphogenesis
… tissue stiffness, generate periodically spaced multicellular aggregates of dermal progenitors. As the aggregates form, they compress epidermal cells, triggering molecular changes that initiate the feather follicle primordium gene expression program. Yet, two questions remained. How do cells …
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Developing a New Mechanical Model for Swarm Development in Myxococcus xanthus & Establishing a Genotype-to-Phenotype Correlation Between Swarm Pattern Formation and Gene Homology
… and contract, aggregating to form spore-filled multicellular fruiting bodies designed to survive periods of starvation. Extensive progress has been made in identifying genes and genetic pathways that regulate fruiting body formation. However, an accurate description of the dynamics that underlie …
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Dynamics and Mechanics of Zebrafish Embryonic Tissues
… of cell migration in three dimensions in tissue aggregates and in developing zebrafish embryos is addressed: In chapter 7, 3D-cell migration in multicellular aggregates is analyzed quantitatively by studying the mean square displacement, cell velocity distribution and velocity autocorrelation. In …