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PiB-PET versus post-mortem amyloid. Trans-axial PiB slices from a patient with CERAD sparse (top row), moderate (middle row) and frequent (bottom row) neuritic plaques. PiB-PET trans-axial slices are presented in neurological orientation. Photomicrographs of amyloid-β immunohistochemistry are shown at ×10 (top and bottom rows) or ×20 (middle row) magnification.
