Drug Resistance, ViralHIV Protease InhibitorsHIV ProteaseDrug Resistance, Multiple, ViralHIV-1Reverse Transcriptase InhibitorsHIV Reverse TranscriptaseHIV InfectionsMutationAnti-HIV AgentsProtease InhibitorsMutation, MissensePoint MutationDrug Resistance, MicrobialDrug Resistance, NeoplasmMolecular Sequence DataNevirapineGenotypeDrug ResistanceAmino Acid SubstitutionSerine Proteinase InhibitorsHIV Integrase InhibitorsSequence Analysis, DNAAmino Acid SequenceDrug Resistance, BacterialZidovudineTreatment FailureBase SequenceMicrobial Sensitivity TestsAntiviral AgentsViral LoadSulfonamidesRNA, ViralRitonavirSaquinavirProtein Kinase InhibitorsSerine EndopeptidasesModels, MolecularIndinavirBenzoxazinesProto-Oncogene Proteins B-rafHIV Integrasepol Gene Products, Human Immunodeficiency VirusNelfinavirPeptide HydrolasesOseltamivirSecretory Leukocyte Peptidase InhibitorLopinavirCell LineMutagenesis, Site-DirectedCell Line, TumorEndopeptidasesPolymerase Chain ReactionAntiretroviral Therapy, Highly ActiveFrameshift MutationCarbamatesDrug Resistance, MultipleNeuraminidaseProteinase Inhibitory Proteins, SecretoryTrypsin InhibitorsSerpinsOrganophosphonatesPyrimidinonesCysteine ProteasesEscherichia coliAnti-Bacterial AgentsCysteine EndopeptidasesPhenotypeGerm-Line MutationBacterial ProteinsLamivudinePyrimidinesCysteine Proteinase InhibitorsPiperazinesMutation RateDrug Resistance, Multiple, BacterialDNA Mutational AnalysisAntineoplastic AgentsOligopeptidesProtease NexinsQuinazolinesPyrrolidinonesAdenineDisease ResistanceAllelesBinding SitesDNA PrimersHerbicide ResistanceAnti-Retroviral Agentsalpha 1-AntitrypsinHIVKineticsPedigreeCloning, MolecularEnzyme InhibitorsPhylogenyReceptor, Epidermal Growth FactorProtein Structure, TertiaryVascular ResistanceSequence Alignment