1. Division of Experimental Oncology, Department of Oncology, Faculty of Medicine & Dentistry, University of Alberta, 11560 University Avenue, Edmonton, AB T6G 1Z2, Canada
2. Department of Biophysics, Faculty of Science, Cairo University, Giza 12613, Egypt
3. Department of Biological Sciences, Faculty of Science, University of Alberta, Edmonton, AB T6G 2E1, Canada