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Immuno-stained sections of the human brain illustrating the labelling against amyloid-β peptide (a), tau protein (c) and α-synuclein protein (e). High-power images shown in b (arrow points to a plaque), d (arrow points to a dystrophic neurite) and f (arrow points to a Lewy body and arrowhead to a Lewy neurite) correspond to frames in a, c and e, respectively. Calibration bars: 250 μm for a, c, e, 20 μm for b, d, f. For abbreviations, see list
