Affiliation: | (1) Department of Genetics, University of Georgia, 30602 Athens, GA, U.S.A.;(2) Present address: Biologie Cellulaire, CNRA, Route de Dt. Cyr, 78000 Versailles, France;(3) Present address: Carlsberg Laboratory, Department of Physiology, GL. Carlsberg Vej10, DK-2500 Valby, Copenhagen, Denmark |