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Postmortem brain tissue sample. (A) Necrotizing arteritis with an inflammatory infiltrate mainly made of neutrophils (hemalum-phloxin-safranin stain; original magnification, ×40). (B, C, and D) Massive infiltration by filamentous hyphae of meninges (arrowheads) and arteries with destruction of the arterial wall (arrows) (Grocott-Gomori methenamine-silver stain; original magnifications, ×200 for panels B and C and ×400 for panel D).
