the picture shows a toxoplasma cyst. Common infection of AIDS

microglial nodules seen. Location of lesions is most consistent with Coxsackie meningoencephalitis.

the pathology illustrated is spongiosis of the cortex, characteristic with CJD. The lesions of Vit B12 deficiency involve the spinal cord and those of CO poisoning involve the white matter.

necrotic mass lesion with numerous giant cells, consistent with tuberculoma. The CSF shows mononuclear pleocytosis, increased protein and decreased glucose.

cryptococcal meningitis

intracellular inclusion normally occurring primarily in the DNA viruses.

HSV eh

HSV encephalitis

Hsv encephalitis- hemorrhage and perivascular inflammation.