Acquired Immunodeficiency SyndromeSyndromeMurine Acquired Immunodeficiency SyndromeHIV-1HIV InfectionsSimian immunodeficiency virusHIVAIDS-Related Opportunistic InfectionsSimian Acquired Immunodeficiency SyndromeAIDS-Related ComplexImmunologic Deficiency SyndromesPostoperative ComplicationsFeline Acquired Immunodeficiency SyndromeImmunodeficiency Virus, FelineHomosexualitySevere Combined ImmunodeficiencyHIV SeropositivityAnti-HIV AgentsZidovudineCommon Variable ImmunodeficiencyPneumonia, PneumocystisCD4 Lymphocyte CountHIV AntibodiesVirus ReplicationLymphoma, AIDS-RelatedMolecular Sequence Datatat Gene Products, Human Immunodeficiency VirusAntiretroviral Therapy, Highly ActiveHIV AntigensHIV-2DeltaretrovirusHIV Envelope Protein gp120Sarcoma, KaposiRetrospective StudiesOpportunistic InfectionsMacaca mulattaTreatment OutcomeHIV Core Protein p24RNA, ViralViral LoadCytomegalovirus RetinitisGene Products, gagDown SyndromeRisk FactorsMetabolic Syndrome XAntigens, CD4CD4-Positive T-LymphocytesDNA, ViralTime FactorsReverse Transcriptase InhibitorsBase SequenceCell LineT-LymphocytesRetroviridae InfectionsFatal OutcomeToxoplasmosis, CerebralAmino Acid SequenceHIV Reverse TranscriptaseProspective StudiesMutationLymphatic DiseasesAntiviral AgentsGene Products, envnef Gene Products, Human Immunodeficiency VirusRetroviridae ProteinsHIV SeronegativityUnited StatesAIDS SerodiagnosisFollow-Up StudiesDidanosinePolymerase Chain ReactionAIDS Dementia Complexgag Gene Products, Human Immunodeficiency VirusSubstance Abuse, IntravenousHIV SeroprevalenceIncidenceHIV Protease InhibitorsAntibodies, ViralReceptors, CCR5RNA-Directed DNA PolymeraseAIDS VaccinesImmunocompromised HostHIV Long Terminal RepeatPentamidineHemophilia Arev Gene Products, Human Immunodeficiency VirusCohort StudiesGene Products, tatNephrotic SyndromeIntraoperative ComplicationsProvirusesZalcitabineDisease ProgressionLeukocyte CountMycobacterium avium-intracellulare InfectionCells, CulturedPrevalenceLeukocytes, MononuclearHIV Envelope Protein gp41Sjogren's Syndrome