Western blot analysis of Beta amyloid peptides were applied to SDS-PAGE and transferred to a PVDF membrane. The blot was probed with 2 ug/mL Beta amyloid monoclonal antibody, clone BDI260 (Cat # MAB3916) for 1 hour at 15-22°C and developed by ECL. Lane 1 : Beta amyloid (1-40). Lane 2 : Beta amyloid (1-42). Lane 3 : Beta amyloid (1-43).