... amino acids. beta Amyloid [1-40], beta Amyloid [1-42], and beta Amyloid [1-43] peptides result from cleavage of ... Amyloid precursor protein after residues 40, 42, and 43, respectively. The cleavage takes place by gamma ... processing step. beta Amyloid [1-40], beta Amyloid [1-42], and beta Amyloid [1-43] peptides are major constituents of ... weeks at 2-4 °C. Anti-beta-Amyloid(35-42)