Central Nervous System DiseasesNervous System DiseasesCentral Nervous System Viral DiseasesMeningoencephalitisCentral Nervous System InfectionsCentral Nervous SystemBrainSubacute Sclerosing PanencephalitisAIDS Dementia ComplexBrain DiseasesMaus Elberfeld virusCerebrospinal FluidMeningesDemyelinating DiseasesEnterovirus InfectionsAstrocytesNeuronsMagnetic Resonance ImagingNervous SystemDisease Models, AnimalBrain ChemistryAutonomic Nervous System DiseasesBrain NeoplasmsBrain InjuriesLamin Type ACells, CulturedDigestive System DiseasesPeripheral Nervous SystemBrain MappingPeripheral Nervous System DiseasesAutopsyCause of DeathCentral Nervous System NeoplasmsEnteric Nervous SystemHeart Conduction SystemTime FactorsImmunohistochemistryBrain StemAutonomic Nervous SystemImmune System DiseasesNervous System Physiological PhenomenaEndocrine System DiseasesSympathetic Nervous SystemBrain EdemaMutationBrain IschemiaBlood-Brain BarrierInfant, NewbornNerve Tissue ProteinsBrain AbscessRisk FactorsNervous System NeoplasmsCerebral CortexCohort StudiesNeurogliaRats, Sprague-DawleySpinal CordRetrospective Studies