Acquired Immunodeficiency SyndromeMurine Acquired Immunodeficiency SyndromeSyndromeHIV-1HIV InfectionsSimian immunodeficiency virusHIVAIDS-Related Opportunistic InfectionsSimian Acquired Immunodeficiency SyndromeAIDS-Related ComplexImmunologic Deficiency SyndromesFeline Acquired Immunodeficiency SyndromeImmunodeficiency Virus, FelineHomosexualitySevere Combined ImmunodeficiencyMolecular Sequence DataHIV SeropositivityZidovudineAnti-HIV AgentsCD4 Lymphocyte CountVirus ReplicationCommon Variable ImmunodeficiencyPneumonia, PneumocystisHIV AntibodiesCD4-Positive T-LymphocytesLymphoma, AIDS-Relatedtat Gene Products, Human Immunodeficiency VirusAntiretroviral Therapy, Highly ActiveCell LineHIV AntigensT-LymphocytesBase SequenceHIV-2Macaca mulattaRNA, ViralDeltaretrovirusHIV Envelope Protein gp120Amino Acid SequenceGene Products, gagAntigens, CD4Sarcoma, KaposiLeukemia Virus, MurineHIV Core Protein p24DNA, ViralViral LoadOpportunistic InfectionsCytomegalovirus RetinitisDown SyndromeRetroviridae InfectionsMetabolic Syndrome XCells, CulturedMutationReverse Transcriptase InhibitorsMice, Inbred C57BLLymphocyte ActivationPolymerase Chain ReactionToxoplasmosis, CerebralTime FactorsHIV Reverse TranscriptaseDisease Models, AnimalGene Products, envAntibodies, ViralAntiviral AgentsRetroviridae ProteinsCD8-Positive T-Lymphocytesnef Gene Products, Human Immunodeficiency VirusLymphatic DiseasesHIV SeronegativityAIDS SerodiagnosisDidanosineRNA-Directed DNA Polymerasegag Gene Products, Human Immunodeficiency VirusReceptors, CCR5Mice, Inbred BALB CHIV Protease InhibitorsAIDS Dementia ComplexSubstance Abuse, IntravenousAIDS VaccinesHIV SeroprevalenceFatal OutcomeProvirusesHIV Long Terminal RepeatUnited StatesPentamidineRisk FactorsImmunocompromised Hostrev Gene Products, Human Immunodeficiency VirusGene Products, tatLeukocytes, MononuclearPhenotypeHemophilia AFlow CytometryAntibodies, MonoclonalNeutralization TestsLeukocyte CountB-LymphocytesZalcitabineNephrotic SyndromeLymphocytesGenes, env