Affiliation: | 1. Department of Microbiology and Infectious Diseases, University of Calgary, Calgary, AB, Canada.;2. Present address: Department of Pathology & Laboratory Medicine, UCLA, Los Angeles, CA, USA.;3. Departments of Biological Sciences and;4. Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.;5. Chemistry, University of Alberta, Edmonton, AB, Canada.;6. Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, AB, Canada. |