Reverse Transcriptase InhibitorsHIV Reverse TranscriptaseAnti-HIV AgentsDrug Resistance, ViralHIV-1BenzoxazinesNevirapineHIV InfectionsZidovudineDelavirdineRNA-Directed DNA PolymeraseHIV Protease InhibitorsOrganophosphonatesNucleotidesMolecular Sequence DataStavudineDideoxynucleosidesDrug Resistance, Multiple, ViralAdenineOxazinesDidanosineBase SequenceAntiretroviral Therapy, Highly ActiveLamivudineNucleosidesPyridazinesPyrimidinonesPyranocoumarinsRitonavirMutationZalcitabineDideoxynucleotidesRNA, ViralLopinavirViral LoadAmino Acid SequenceAnti-Retroviral AgentsRNA, MessengerReverse Transcriptase Polymerase Chain ReactionTranscription, GeneticHIVCD4 Lymphocyte CountDrug Therapy, CombinationVirus ReplicationTreatment FailureCloning, MolecularGenotypeHIV ProteaseThymine NucleotidesRibonuclease HNelfinavirCell LineSequence Analysis, DNATelomeraseHIV Integrase InhibitorsHIV-Associated Lipodystrophy SyndromeAntiviral AgentsPolymerase Chain ReactionDrug InteractionsDNA PrimersMutation, MissenseReverse TranscriptionAcidosis, LacticPolymorphism, Single NucleotideRNADNA, Viralpol Gene Products, Human Immunodeficiency VirusAdenine NucleotidesIntegrase InhibitorsHIV-2FuransKineticsPyrrolidinonesSaquinavirIndinavirAmino Acid SubstitutionDrug Resistance, MicrobialAcquired Immunodeficiency SyndromePhylogenyNitrilesDNAAnilidesTemplates, GeneticCells, CulturedGuanine NucleotidesSequence Homology, Nucleic AcidDNA, MitochondrialBenzoxazolesDNA, ComplementaryNucleic Acid ConformationPyridinesProtease InhibitorsInhibitory Concentration 50Binding SitesPyridonesAvian myeloblastosis virusModels, MolecularEscherichia coliPurine NucleotidesSequence Homology, Amino Acid