 RBC 29, Glucose 13, Cultures (bacteria, fungal, AFB) were negative, crytococcal Ag negative. The elevated CSF total protein, IgG, and albumin suggested breakdown of the blood brain barrier or blockage of CSF flow. The normal IgG synthesis rate and lack of oligoclonal banding did not suggest demylination. A second CSF analysis on 11/2/94 revealed similar findings; and in addition Anti-purkinje cell and Anti-neuronal antibodies (Yo and Ho) were not found; Beta-2 microglobulin was 1.8 (normal); histoplasmosis Ag negative. Serum ACE