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Representative chronic bleeding found in cerebral amyloid angiopathy patients' brains. Serial sections were stained with hematoxylin‐eosin (H‐E) staining (A), anti‐β‐amyloid (Aβ) (B), anti‐matrix metalloproteinase (MMP)‐2 (C) and anti‐MMP‐9 (D) antibodies. 100× magnification.
