1. Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota Medical School and College of Biological Sciences, Minneapolis, MN 55455
2. Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN 55454
3. Biology Department, Tuskegee University, Tuskegee, AL 36088
4. St. Paul Community College, St. Paul, MN 55102
5. Department of Chemistry, University of Minnesota College of Science and Engineering, Minneapolis, MN 55455
6. Department of Genetics, Cell Biology, and Development, University of Minnesota College of Biological Sciences, St. Paul, MN 55108