Acquired Immunodeficiency SyndromeSalivaImmunodeficiency Virus, FelineMurine Acquired Immunodeficiency SyndromeSyndromeFeline Acquired Immunodeficiency SyndromeHIV-1Leukemia Virus, FelineHIV InfectionsCatsSimian immunodeficiency virusHIVAIDS-Related Opportunistic InfectionsCat DiseasesSimian Acquired Immunodeficiency SyndromeAIDS-Related ComplexImmunologic Deficiency SyndromesCalicivirus, FelineCoronavirus, FelineHomosexualitySevere Combined ImmunodeficiencyHIV SeropositivityMolecular Sequence DataZidovudineAnti-HIV AgentsFeline PanleukopeniaVirus ReplicationCD4 Lymphocyte CountSarcoma Viruses, FelineCommon Variable ImmunodeficiencyPneumonia, PneumocystisHIV AntibodiesFeline Infectious PeritonitisLymphoma, AIDS-Relatedtat Gene Products, Human Immunodeficiency VirusFeline panleukopenia virusHIV AntigensAntiretroviral Therapy, Highly ActiveHIV-2RNA, ViralGene Products, gagDNA, ViralDeltaretrovirusLentivirus InfectionsSaliva, ArtificialHIV Envelope Protein gp120Sarcoma, KaposiCell LineViral LoadBase SequenceRetroviridae InfectionsMacaca mulattaLeukemia, FelineHIV Core Protein p24Amino Acid SequenceOpportunistic InfectionsCytomegalovirus RetinitisCD4-Positive T-LymphocytesAntigens, CD4Down SyndromeMetabolic Syndrome XReverse Transcriptase InhibitorsAntibodies, ViralT-LymphocytesSalivary Proteins and PeptidesPolymerase Chain ReactionRetroviridae ProteinsGene Products, envToxoplasmosis, CerebralMutationHIV Reverse TranscriptaseAntiviral AgentsProvirusesRNA-Directed DNA Polymerasenef Gene Products, Human Immunodeficiency VirusLymphatic DiseasesHIV SeronegativityAIDS SerodiagnosisDidanosineGenes, envTime Factorsgag Gene Products, Human Immunodeficiency VirusFatal OutcomeSubstance Abuse, IntravenousReceptors, CCR5AIDS Dementia ComplexHIV SeroprevalenceAIDS VaccinesNeutralization TestsHIV Protease InhibitorsSjogren's SyndromeHIV Long Terminal RepeatUnited StatesPentamidineRisk FactorsLeukocytes, MononuclearCells, Culturedrev Gene Products, Human Immunodeficiency VirusGene Products, tatZalcitabine