Leukemia Virus, FelineLeukemia, FelineCatsCat DiseasesAcquired Immunodeficiency SyndromeImmunodeficiency Virus, FelineLeukemia Virus, MurineFeline Acquired Immunodeficiency SyndromeSarcoma Viruses, FelineRetroviridae InfectionsMoloney murine leukemia virusLeukemia, ExperimentalLeukemia Virus, BovineLeukemiaReceptors, VirusMurine Acquired Immunodeficiency SyndromeTumor Virus InfectionsRetroviridaeSyndromeMolecular Sequence DataAKR murine leukemia virusProvirusesCell LineCalicivirus, FelineHIV-1DNA, ViralCoronavirus, FelineVirus ReplicationLynxViral Envelope ProteinsLeukemia Virus, Gibbon ApeFeline panleukopenia virusBase SequencePumaFeline PanleukopeniaRauscher VirusParasitesHIV InfectionsOncogenic VirusesFriend murine leukemia virusGenes, envGenes, ViralAmino Acid SequenceAntigens, ViralSimian immunodeficiency virusLionsRNA, ViralGene Products, gagRetroviridae ProteinsRetroviridae Proteins, OncogenicLeukemia, Myeloid, AcuteHIVAntibodies, ViralViral ProteinsDefective VirusesGene Products, envTerminal Repeat SequencesFeline Infectious PeritonitisGammaretrovirusRNA-Directed DNA PolymeraseFelisPolymerase Chain ReactionSimian Acquired Immunodeficiency SyndromeHylobatesAIDS-Related Opportunistic InfectionsGenes, polHuman T-lymphotropic virus 1MinkImmunologic Deficiency SyndromesAIDS-Related ComplexThymus NeoplasmsRepetitive Sequences, Nucleic AcidVirus IntegrationLymphomaNeutralization TestsRecombination, GeneticT-LymphocytesViral InterferenceDeltaretrovirusCell Transformation, ViralHelper VirusesSarcoma Virus, Woolly MonkeyCytopathogenic Effect, ViralCloning, MolecularAbelson murine leukemia virusLentivirus InfectionsLeukemia, Lymphocytic, Chronic, B-CellHomosexualitySevere Combined ImmunodeficiencyRNA VirusesSpecies SpecificityCells, CulturedGene Products, taxZidovudineLeukemia, LymphoidRed-Cell Aplasia, PureGenetic VectorsAnti-HIV AgentsHIV SeropositivityVirus Assembly