GanciclovirInjections, IntravenousInjectionsAntiviral AgentsThymidine KinaseCytomegalovirus InfectionsCytomegalovirus RetinitisCytomegalovirusFoscarnetAcyclovirGenetic TherapySimplexvirusGenes, Transgenic, SuicideProdrugsRetinitisInjections, IntramuscularGenetic VectorsInjections, IntralesionalTime FactorsInjections, SubcutaneousAdenoviridaeInjections, IntraperitonealAdministration, OralTissue DistributionGene Transfer TechniquesPhosphotransferases (Alcohol Group Acceptor)Herpesvirus 1, HumanRabbitsGliosarcomaInjections, Intra-ArticularVitreous BodyOrgan TransplantationBystander EffectDisease Models, AnimalTransplantation, HomologousAIDS-Related Opportunistic InfectionsDose-Response Relationship, DrugInjections, Intra-ArterialOrganophosphonatesInjections, IntraventricularAntimetabolitesLiverRats, Sprague-DawleyOrganophosphorus CompoundsMetabolic Clearance RateMice, Inbred BALB CViremiaTransduction, GeneticBone Marrow TransplantationMice, NudeMice, Inbred C57BLTumor Cells, CulturedCytosineNeoplasm TransplantationRibonucleosidesDrug Resistance, ViralDrug ImplantsDNA, ViralAcquired Immunodeficiency SyndromeHalf-LifeContrast MediaTreatment OutcomeRats, WistarInjections, IntradermalInjections, EpiduralRats, Inbred StrainsImmunosuppressionInjections, SpinalDimercaprolRadiopharmaceuticalsLiposomesOpportunistic InfectionsSpleenKidneyAutoradiographyIodine RadioisotopesIntravitreal InjectionsDogsHerpesvirus 6, HumanTransplantationPneumonia, Viral