Fig. 4
From: A case of eagle fern (Pteridium aquilinum) poisoning on a pig farm
Histological photographs of brain of the male pig. a Cerebrocortical acidophilic neuronal necrosis (× 400). b Gitter cells (arrow) in the spongiotic area (× 400). c Endothelial activation with perivascular leukocytic infiltration (× 200). d Leptomeningeal leukocytic infiltration, including eosinophil infiltration (× 400)