RibavirinNucleosidesAntiviral AgentsPurine NucleosidesPyrimidine NucleosidesNucleoside Transport ProteinsRibonucleosidesInterferon-alphaPolyethylene GlycolsArabinonucleosidesEquilibrative Nucleoside Transporter 1Hepatitis C, ChronicReverse Transcriptase InhibitorsZidovudineGuanosineDrug Therapy, CombinationDioxolanesZalcitabineDeoxycytidine KinaseDideoxynucleosidesDideoxynucleotidesCytidineThioinosineHIV Reverse TranscriptaseAnti-HIV AgentsUridineHepacivirusCladribineDeoxyribonucleosidesRecombinant ProteinsStavudineInosineThymine NucleotidesArabinofuranosyluracilTubercidinAcyclovirLamivudineThymidine KinaseNucleotidesDidanosineAdenineOrganophosphonatesDrug Resistance, ViralPurine-Nucleoside PhosphorylaseAdenosineRNA, ViralKineticsEquilibrative-Nucleoside Transporter 2DeoxycytidineDeoxyuridineDeoxyadenosinesViral LoadGanciclovirHIV-1ThymidineCytosineNucleoside-Diphosphate KinaseVirus ReplicationGuanineStructure-Activity RelationshipMolecular StructurePurines2-AminopurineHepatitis CCytarabineAntimetabolites, AntineoplasticProdrugsFormycinsVidarabineTreatment OutcomeAdenosine KinaseThionucleosidesHIV InfectionsToyocamycinSubstrate SpecificityMolecular Sequence DataUridine PhosphorylaseDideoxyadenosineMutationAdenine NucleotidesNucleoside QEquilibrative Nucleoside Transport ProteinsAcidosis, LacticGenotypeStereoisomerismCell LineNucleoside-TriphosphataseArabinofuranosylcytosine TriphosphateAntineoplastic AgentsDose-Response Relationship, DrugHeterocyclic Compounds, 2-RingMethylthioinosineCytidine TriphosphatePentostatinAdenosylhomocysteinaseBase SequenceInhibitory Concentration 50Adenosine Deaminase InhibitorsDeoxyguanine NucleotidesIMP Dehydrogenase