Immunohistochemical evidence that Aβ1–42 is more abundant in amyloid plaques than Aβ1–40 in Alzheimer's disease brain M.J. Savage, L.R. Pinsker, T. Emmons, J.K. Kawooya, R. Siman, B.D. Greenberg. Cephalon, Inc., West Chester, PA, 19380 USA