Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Histopathology of the cerebral cortex containing medium sized blood vessel. (a) H&E stain ×40 reveals acute inflammation concentrated in vessel wall. (b) H&E stain ×400 reveals acute necrotizing vasculitis; dense neutrophilic inflammatory exudate; and necrosis in vessel wall.
