LentivirusEndogenous RetrovirusesLentivirus InfectionsRetroviridaeLentiviruses, Ovine-CaprineVisna-maedi virusRetroviridae InfectionsInfectious Anemia Virus, EquineImmunodeficiency Virus, FelineGenetic VectorsVisnaPneumonia, Progressive Interstitial, of SheepLentiviruses, PrimateBetaretrovirusTerminal Repeat SequencesArthritis-Encephalitis Virus, CaprineTransduction, GeneticLeukemia Virus, MurineProvirusesMolecular Sequence DataGene Products, gagRetroviruses, SimianSpumavirusVirus IntegrationLentiviruses, BovineHIV-1Cell LineGenes, polBase SequenceVirus ReplicationGenes, envPumaRetroviridae ProteinsFeline Acquired Immunodeficiency SyndromeEquine Infectious AnemiaGene Products, envGene Products, polSimian immunodeficiency virusGoatsDNA, ViralViral Envelope ProteinsSimian foamy virusMoloney murine leukemia virusAmino Acid SequenceRetroelementsRNA-Directed DNA PolymeraseRNA, ViralLemurCercopithecusCatsGene Transfer TechniquesSheep DiseasesLionsLentiviruses, FelinePhylogenyGenes, ViralVirionImmunodeficiency Virus, BovineGenes, gagGammaretrovirusGenetic TherapyGenome, ViralReceptors, VirusSheepMason-Pfizer monkey virusVirus AssemblyRepetitive Sequences, Nucleic AcidGoat DiseasesGene Expression Regulation, ViralGenes, Intracisternal A-ParticleHIVHexadimethrine BromideHIV-2AlpharetrovirusPrimatesGreen Fluorescent ProteinsCells, CulturedViral ProteinsTransfectionAvian leukosis virusSpecies SpecificityCytosine DeaminaseHorsesAntibodies, ViralAvian Sarcoma VirusesPulmonary Adenomatosis, OvineReticuloendotheliosis virusMonkey DiseasesGenes, revHeLa CellsRecombination, GeneticGenes, tatSimian Acquired Immunodeficiency SyndromeLeukemia Virus, FelinePolymerase Chain ReactionLeukemia Virus, BovineTranscription, GeneticTransgenesCloning, MolecularDeltaretrovirus