H&E and LFB staining of brain sections reveal the absence of pathologic autoimmunity. Perfusion-fixed brains were obtained from GL261-bearing mice treated with GAA-vaccine and poly-ICLC on day 90 after the tumor-inoculation. Frozen sections were stained with LFB (B and D). Cryostat sections were also stained with H&E to evaluate the overall infiltration of mononuclear immune cells (A and C). Images were taken from the basal ganglia. The thick bundle strongly stained with LFB indicates internal capsule. All images were obtained from the corresponding visual fields. The original magnifications are × 10 (for A and B), and × 20 (for C and D). There was no evidence of demyelination, hemorrhage, or pathological immune cell infiltration throughout the brain.