Central Nervous System DiseasesNervous System DiseasesCentral Nervous System Viral DiseasesMeningoencephalitisCentral Nervous System InfectionsCentral Nervous SystemBrainSubacute Sclerosing PanencephalitisAIDS Dementia ComplexBrain DiseasesMaus Elberfeld virusCerebrospinal FluidMeningesDemyelinating DiseasesEnterovirus InfectionsAstrocytesNervous SystemNeuronsDisease Models, AnimalMagnetic Resonance ImagingImmune SystemAutonomic Nervous System DiseasesCells, CulturedLamin Type ADigestive System DiseasesPeripheral Nervous SystemImmune System DiseasesPeripheral Nervous System DiseasesCause of DeathAutopsyEnteric Nervous SystemCentral Nervous System NeoplasmsHeart Conduction SystemImmune ToleranceAutonomic Nervous SystemTime FactorsEndocrine System DiseasesMutationImmunohistochemistrySympathetic Nervous SystemNervous System Physiological PhenomenaMice, Inbred C57BLImmunity, InnateInfant, NewbornRisk FactorsNervous System NeoplasmsCohort StudiesT-LymphocytesImmune EvasionImmune SeraAntigen-Antibody ComplexMice, Inbred BALB CCytokinesImmunity, Cellular