FoscarnetThymidineThymidine KinasePhosphonoacetic AcidGanciclovirAntiviral AgentsCytomegalovirus RetinitisAcyclovirOrganophosphorus CompoundsThymidine PhosphorylaseCytomegalovirus InfectionsCytomegalovirusOrganophosphonatesSkin Diseases, ViralRetinitisCytosineStomatitis, HerpeticVirus ReplicationDrug Resistance, ViralSimplexvirusHerpes SimplexZidovudineHerpes LabialisAIDS-Related Opportunistic InfectionsAcquired Immunodeficiency SyndromeHerpesvirus 1, HumanThymidine MonophosphateCell LineDNA-Directed DNA PolymeraseAdministration, TopicalDNA, ViralReverse Transcriptase InhibitorsViral Plaque AssayRoseolovirus InfectionsDrug Resistance, MicrobialInterferonsCells, CulturedOintmentsDideoxynucleotidesHerpesvirus 6, HumanNucleosidesThymine NucleotidesDiphosphates