Institution: | (1) Ontario Ministry of Agriculture and Food, Agrieultural and Food Laboratory Services Branch, 95 Stone Road West, P. O. Box 3650, N1H 8J7 Guelph, Ontario, Canada;(2) Centre for Toxicology, 620 Gordon Street, N1G 1Y4 Guelph, Ontario, Canada;(3) Department of Environmental Biology, University of Guelph, N1G 2W1 Guelph, Ontario, Canada |