Affiliation: | 1. Department of Molecular Biology, University of Geneva, 30, quai Ernest-Ansermet, 1211 Geneva 4, Switzerland Tel. (022) 21-93-55;7. Biogen, 3, route de Drize, 1227 Carouge Switzerland Tel. (022) 43-32-00;71. Institut de Recherche en Biochimie, et Génétique Cellulaires du CNRS, 118, route de Narbonne, F-31062 Toulouse Cedex France Tel. (0033) 61 52-14-52 |