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(A) Brain section from the temporal lobe of a memory-affected animal (subject T3311) treated with a polyclonal serum against human Aβ42 and stained with DAB. The inset picture is a photomicrograph control treated with nonsense rabbit serum. (B) The occipital lobe of an Aged-matched subject (subject 10749); and (C) the hippocampus (subject I1112); arrows indicate deposition of the Aβ42 inside the walls of small veins. Scale bars: 60 μm.
