Martin Davies¹, Alan N. Bateson^1,2 and Susan M. J. Dunn^1,2

¹ Department of Pharmacology

²Division of Neuroscience, Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada T6G 2H7

Received 07/16/96; Accepted 07/22/96; On-line 09/01/96

Work in the authors' laboratories was supported by grants from the Medical Research Council of Canada (to ANB and SMJD). MD was supported by an MRC Postdoctoral Fellowship, ANB by a Scholarship from the Alberta Heritage Foundation for Medical Research and SMJD by an MRC Scientist Award.