Grant N Pierce1, Delfin Rodriguez-Leyva1, Stephanie P B Caligiuri1, Andrea L Edel1. 1. From the Department of Physiology and Pathophysiology, College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada (GNP, e-mail: gpierce@sbrc.ca, DR-L, SPBC, ALE).