1. Department of Biological Sciences, Youngstown State University, Youngstown, Ohio;
2. Department of Biological Science, Florida State University, Tallahassee, Florida;
3. Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York;
4. Program in Molecular Biophysics, Florida State University, Tallahassee, Florida; and
5. Department of Cell Biology and Anatomy, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada