Institution: | (1) Department of Biology, Queen's University, Kingston, Ont., Canada, K7L 3N6 e-mail: tuftsb@biology.queensu.ca Tel.: +1-613-5336143; Fax: +1-613-5336617, CA;(2) Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ont., Canada, K1S 5B6, CA;(3) Department of Physiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6085, USA, US |