Fig. 2: Panel A: Necrotizing encephalitis with varying degrees of gliosis and mononuclear infiltration by lymphocytes and plasma cells (hematoxylin–eosin, original magnification х10). Panel B: Focal discontinuities of the ependymal lining with subependymal infiltration by lymphocytes and gliosis (hematoxylin–eosin, original magnification х10). Panel C: Perivascular cuffing of the subependyma vessels by lymphocytes (hematoxylin–eosin, original magnification х25).