Viral LoadHIV InfectionsAntiretroviral Therapy, Highly ActiveCD4 Lymphocyte CountAnti-HIV AgentsHIV-1Protease InhibitorsHIV Protease InhibitorsAnti-Retroviral AgentsRNA, ViralCD4-Positive T-LymphocytesSerine Proteinase InhibitorsHIV ProteaseTreatment OutcomeCohort StudiesSerine EndopeptidasesPeptide HydrolasesRitonavirSecretory Leukocyte Peptidase InhibitorIndinavirSaquinavirMolecular Sequence DataEndopeptidasesNelfinavirDrug Resistance, ViralProteinase Inhibitory Proteins, SecretoryTrypsin InhibitorsSerpinsAmino Acid SequenceCysteine ProteasesLopinavirCysteine EndopeptidasesCysteine Proteinase InhibitorsPyrimidinonesCarbamatesProtease Nexinsalpha 1-AntitrypsinAprotininProtease LaAntiviral AgentsViremiaReverse Transcriptase InhibitorsOligopeptidesTosyllysine Chloromethyl KetoneGabexateATP-Dependent ProteasesBase SequenceTrypsin Inhibitor, Bowman-Birk SoybeanHIVPepstatinsMutationAntipainCathepsinsRecombinant ProteinsDNA, ViralTosylphenylalanyl Chloromethyl KetoneTime FactorsPhenylmethylsulfonyl FluorideCell LineKineticsSubstrate SpecificityVirus ReplicationDrug Therapy, CombinationHepacivirusTrypsin Inhibitor, Kunitz SoybeanCystatinsLeupeptinsGenotypeChymotrypsinPancreatic ElastaseDrug Resistance, Multiple, ViralPolymerase Chain ReactionCells, CulturedAcquired Immunodeficiency SyndromeRNA, MessengerTrypsinPlasmaSulfonamidesMolecular WeightSerpin E2Electrophoresis, Polyacrylamide GelLeukocyte ElastaseCloning, MolecularAspartic Acid EndopeptidasesHepatitis C, ChronicSerine ProteasesSimian Acquired Immunodeficiency SyndromeSimian immunodeficiency virusSequence Homology, Amino AcidModels, MolecularSubtilisinsReverse Transcriptase Polymerase Chain ReactionHydrolysisViral Nonstructural ProteinsBinding SitesElafinalpha-MacroglobulinsProtein BindingCalpainBenzoxazines