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 ImmunodeficiencyT-LymphocytesMolecular Sequence DataHIV SeropositivityCD4-Positive T-LymphocytesZidovudineAnti-HIV AgentsPneumonia, PneumocystisCD4 Lymphocyte CountVirus ReplicationCommon Variable ImmunodeficiencyLymphocyte ActivationHIV AntibodiesLymphoma, AIDS-RelatedAntigens, CD4Cell LineCells, Culturedtat Gene Products, Human Immunodeficiency VirusHIV AntigensHIV-2Antiretroviral Therapy, Highly ActiveBase SequenceT-Lymphocytes, RegulatoryMice, Inbred C57BLMacaca mulattaDeltaretrovirusHIV Envelope Protein gp120RNA, ViralGene Products, gagSarcoma, KaposiAmino Acid SequenceLeukemia Virus, MurineHIV Core Protein p24Viral LoadB-LymphocytesMice, Inbred BALB CDNA, ViralOpportunistic InfectionsCytomegalovirus RetinitisT-Lymphocytes, Helper-InducerDisease Models, AnimalLymphocytesDown SyndromeRetroviridae InfectionsMetabolic Syndrome XMutationReverse Transcriptase InhibitorsImmune ToleranceTime FactorsFlow CytometrySpleenToxoplasmosis, CerebralImmunomodulationLeukocyte CountAntibodies, MonoclonalPolymerase Chain ReactionCytokinesHIV Reverse TranscriptaseGene Products, envPhenotypeRetroviridae ProteinsInterferon-gammaCD8-Positive T-LymphocytesAntiviral Agentsnef Gene Products, Human Immunodeficiency VirusLymphatic DiseasesImmunoglobulin GAntibodies, ViralHIV SeronegativityT-Lymphocyte SubsetsAIDS SerodiagnosisImmunity, CellularDidanosineRNA-Directed DNA Polymerasegag Gene Products, Human Immunodeficiency VirusPokeweed MitogensAIDS Dementia ComplexSubstance Abuse, IntravenousInterleukin-2Receptors, CCR5HIV SeroprevalenceFatal OutcomeAIDS VaccinesHIV Protease InhibitorsHIV Long Terminal RepeatProviruses