This volume contains the proceedings of the sixth Colloque M6decine et Re cherche organized by the Fondation Ipsen pour la Recherche Therapeutique and devoted to Alzheimer's disease. It was held in Strasbourg on April 25, 1990 and dedicated to growth factors and Alzheimer's disease. The proceedings of the previous meetings were published as the present one in the same series: Immunology and Alzheimer's disease (A. Pouplard-Barthelaix, J. Emile, Y Christen eds., 1988), Genetics and Alzheimer's disease (P.-M. Sinet, Y Lamour, Y Christen eds., 1988), Neuronal grafting and Alzheimer's disease (F....