β-Amyloid (25-35) (Amyloid beta-peptide (25-35) ), HFIP-treated is a β-Amyloid (25-35) treated with HFIP. β-Amyloid (25-35) (Amyloid beta-peptide (25-35) ) is the fragment Aβ (25-35) of the Alzheimer's amyloid β-peptide, has shown neurotoxic activities in cultured cells[1].