T. Tomita, K. Maruyama, T. C. Saido, H. Kume, K. Shinozaki, S. Tokuhiro, A. Capell, J. Walter, J. Grünberg and C. Haass 1997. The presenilin 2 mutation (N141I) linked to familial Alzheimer disease (Volga German families) increases the secretion of amyloid protein ending at the 42nd (or 43rd) residue