1. From the Department of Physiology and Pharmacology, Hotchkiss Brain and Libin Cardiovascular Institutes, University of Calgary, Alberta, Canada (A.M.H., O.F.H., D.G.W.)
2. Department of Pharmacology, University of Vermont, Burlington (O.F.H.)
3. Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.E.B., D.G.W.)
4. Advanced Imaging and Microscopy Core, Loma Linda University School of Medicine, CA (M.R., S.M.W.)
5. Experimental and Clinical Research Centre, Charité University Medicine, Berlin, Germany (M.K., M.G.)
6. College of Medicine, California North State University, Sacramento (J.L.P.).