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Full-Text Articles in Life Sciences

Discrimination And Aggregative Patterns Among And Between Populations Of Entamoeba Spp., Katelyn M. Higgins Dec 2011

Discrimination And Aggregative Patterns Among And Between Populations Of Entamoeba Spp., Katelyn M. Higgins

Honors Theses

Kin recognition facilitates the evolution of cooperation in animals, but its relevance in microorganisms and their behavior toward relatives remains unclear. The Entamoeba lineage constitutes an ideal model to determine the behavioral and signaling cues needed for aggregative preference. Chemical cues have been reported for E. histolytica but not E. dispar, suggesting cell-communication between con-specifics and behavioral differences with relevance for disease. Entamoeba varieties have been reported as ‘morphologically undistinguishable’. Two strains of E. invadens have been isolated from different hosts (VK-1: NS - Varanus komodoensis and IP1- serpentes) but were classified within the same ‘species’. Trophozoites …


Characterization Of Expression Of The Kcne Gene Family In Zebrafish, Danio Rerio, Lauren Vernlund May 2011

Characterization Of Expression Of The Kcne Gene Family In Zebrafish, Danio Rerio, Lauren Vernlund

Honors Theses

The KCNE gene family codes for five transmembrane accessory proteins, "minK related peptides" or Mirps, involved in the modification of voltage-gated potassium (Kv) channels, K+ selective pores vital in the regulation of membrane potential and repolarization in all organisms. In mammals, all five KCNE gene members are conserved and active in the heart. In the zebrafish Danio rerio, there are no apparent orthologs for KCNE2 or KCNE5, yet they contain Kv channels with homologous structure, function, and Mirp regulatory behavior to other organisms. Sequence analysis of wildtype zebrafish KCNE1, 3 and 4, and rtPCR on RNA from zebrafish tissues …


Dayton, Ohio: A Study, Nolan Nicaise Apr 2011

Dayton, Ohio: A Study, Nolan Nicaise

Honors Theses

The urban forest is an important element of cityscapes today. Urban trees provide a habitat to wildlife populations, create more tolerable city living conditions, and better the lives of residents around them. The urban forest, however, is not distributed equitably to the urban population, and some residents receive more or less of its positive externalities. Montgomery County, Ohio, was chosen as the study site to determine if environmental injustice was present regarding the urban forest. It was found that there was environmental injustice present in Montgomery County, as the density of the urban forest was limited by the educational obtainment …