Institution: | (1) Department of Plant Pathology, University of Wisconsin, Madison 6, Wisconsin, U.S.A.;(2) College of Medicine, University of Illinois, Chicago, Illinois;(3) Department of Botany, State University of Iowa, Iowa City, Iowa;(4) 's-Gravenhage, Netherlands;(5) Dept. of Dermatology College of Medicine, University of Illinois, Chicago, Illinois |