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FIG 2. Histopathologic examinations of the lesions.
A, Hematoxylin and eosin stain. Vessel walls are thickened by an amorphous eosinophilic substance, and the lumen of the vessel is partially occluded.
B, Immunohistochemistry for glial fibrillary acidic protein shows perivascular gliosis.
C, Immunohistochemistry for ß-amyloid shows the presence of amyloid deposits in the vessel walls.
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