P4‐227: CHARACTERIZATION OF AMINO TERMINAL TRUNCATIONS OF PLAQUE‐ASSOCIATED Aβ AFTER COMBINATION BACE INHIBITOR AND ANTIBODY THERAPY IN AGED PDAPP MICE. (1st July 2014) - Racke, Margaret; Tzaferis, John; Hole, Justin; Liu, Feng; DeLong, Cynthia; May, Patrick; Hutton, Michael; Nordstedt, Christer; DeMattos, Ronald