Life Sciences Commons^™

Cellular Immunity In Children With Down Syndrome (Trisomy-21), Roger Lee Noble

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Individuals with Down syndrome (US) suffer from increased incidence of respiratory infections and lymphoblastic leukemia, and a death rate that is particularly high in the first 5 years of life. Relatively few studies have probed immune parameters in young US children. Primary immune defects in DS may be masked by a degree of immune maturity in adults, and hygienic factors may have an effect on immune capability throughout the years. A study of young children can give clearer evidence of the actual primary immune defects in DS.

Blood samples were drawn from 20 DS children under 6 years old and …

Energetics Of The American Kestrel (Falco Sparverius) During Three Seasons In Northern Utah, Lucinda Haggas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavioral activities and predatory behavior of 18 American Kestrels (Falco sparverius, 9 males and 9 females) were observed for 350+ hours during 3 seasons (nonbreeding = Jan-Feb , breeding = mid-Mar-Apr, and postbreeding = late-Aug-Sept) in northern Utah. Daily energy expenditure (DEE) of male and female kestrels was estimated with a model that incorporated flight activity data from free-living birds and laboratory measurements on daytime and nighttime metabolic rates and energy costs of tissue production derived from captive kestrels. Production costs were included in the DEE for breeding and postbreeding kestrels.

The energy cost of gonadal growth for males (0.02 …

Factors Affecting Feeding Injury To Grasses By Adult Billbugs (Coleoptera: Curculionidae), Dale C. Nielson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Factors associated with feeding injury to grass plants by two species of adult billbugs, Sphenophorus gentilis and S. parvulus, were evaluated. Early season tests utilized adult bluegrass billbugs while later studies involved wildrye billbugs. Types of feeding injury were determined and preferred feeding locations on host plants were identified for each billbug species. Greenhouse and field studies compared different species of grasses, individual plants within a species, and plants from different locations, for billbug susceptibility. The effect of grass plant age and stem size were also tested using bluegrass billbugs.

Using analysis of variance and multiple comparison tests, significant …

Production Of Monoclonal Antibodies Specific For The Microgametocytes Of Eimeria Tenella, Marc A. Laxer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to produce a monoclonal antibody specific for the microgametocytes of Eimeria tenella, examine the site and stage specificity of the antibody, and investigate the immunopotency of the antibody. BALB/c mice were immunized with antigen containing Eimeria tenella microgametocytes isolated from in vitro systems. After three intraperitoneal immunizations with the antigen and one booster immunization administered by tail vein injection, the mice were sacrificed and their spleen cells fused with SP2/0 mouse myeloma cells using polyethylene glycol as a fusing agent. Resultant hybridomas were screened by immunoelectrophoresis, indirect immunofluorescent antibody assay, and immunoelectron microscopy …