Tag: Biological sciences

Segmentation analyses to identify and quantify microglia in 3D image stacks

Abstract: Using time-lapse confocal microscopy to record and observe microgliabehavior in living zebrafish embryos, the Mitchell lab investigates themolecular basis of dynamic migration and phagocytic behavior of microgliain the central nervous system. Microglial cells regulate brain development,maintain neuronal networks, and repair neural injuries. Timelapse imagingprovides crucial insight into the behavior of these cells. Other methods, …

Tailocin treatment of American Foulbrood Disease in honeybees

Tailocins are antibacterial proteins produced by some bacteria to kill closely related bacterial strains. In nature, this benefits the microbe by offering a way for them to control the bacterial composition of their environments. However, in a lab setting, researchers can use these tailocins to treat against unwanted bacteria. The purpose of this research project …

Fire Suppression and Northern Idaho Ground Squirrel (Urocitellus brunneus) Hypothesis Testing

Abstract The Northern Idaho Ground Squirrel (Urocitellus brunneus) is listed as threatened under the Endangered Species Act. The prevailing hypothesis for the species decline is encroachment of trees into its habitat due to fire suppression. However, this hypothesis has not been rigorously tested. Using geographic information systems and aerial imaging, I compared changes in abundance …

Testing the Capacity to Over-Stabilize Viruses by Engineering Mutations into the Capsid of Bacteriophage ɸX174

An effective virus must successfully attach to a receptor on a host cell and inject its genetic material into the cell so that new viruses can be produced. Its ability to infect the host cell is highly dependent on both the binding capability of its capsid proteins as well their ability to modify their conformation …

Phage Engineering to Understand Virus Host Range

Viruses are the most common entities on Earth, outnumbering bacteria by around an order of magnitude, and animals/plants by another order of magnitude. Viruses are also the least well understood group in terms of diversity, function, and evolution. The goal of my project is to explore how viruses can exploit new hosts. Extrapolating what we …