Histopathological analysis of Toxoplasma gondii infection in brain of a hairy dwarf porcupine. (a) Mononuclear cells infiltrating into the brain (encephalitis) and around a vessel, brain, H&E; (b)Toxoplasma. gondii tissue cyst in the middle of the inflammation, brain, H&E. (c) Toxoplasma. gondii tissue cyst next to a vascular cuffing with mononuclear cells infiltration, brain, IHC. (d)Toxoplasma gondii cysts in medullary, adrenal gland, H&E.