Avian ProteinsEndogenous RetrovirusesRetroviridaeRetroviridae InfectionsTerminal Repeat SequencesMolecular Sequence DataRetroviruses, SimianLeukemia Virus, MurineBetaretrovirusSpumavirusProvirusesBase SequencePresynaptic TerminalsGene Products, gagRetroelementsVirus IntegrationSimian foamy virusAmino Acid SequenceCell LineRetroviridae ProteinsMoloney murine leukemia virusDNA, ViralRNA-Directed DNA PolymeraseRepetitive Sequences, Nucleic AcidGenes, polGenes, gagGenetic VectorsGammaretrovirusVirus ReplicationRNA, ViralGenes, ViralGenes, envMason-Pfizer monkey virusGenes, Intracisternal A-ParticleHIV-1AlpharetrovirusAvian leukosis virusGene Products, envGene Products, polReceptors, VirusAvian Sarcoma VirusesNerve EndingsPhylogenyReticuloendotheliosis virusVirionCloning, MolecularViral Envelope ProteinsGenome, ViralGene Expression Regulation, ViralLeukemia Virus, FelineLeukemia Virus, BovineVirus AssemblyTranscription, GeneticViral ProteinsTransfectionDeltaretrovirusHIV Long Terminal RepeatRecombination, GeneticJaagsiekte sheep retrovirusCytidine DeaminaseReverse TranscriptionCell Transformation, ViralReticuloendotheliosis Viruses, AvianOncogenesSpecies SpecificityCercopithecidaeMammary Tumor Virus, MouseMutationCytosine DeaminaseHuman T-lymphotropic virus 1Sequence Homology, Nucleic AcidCells, CulturedTransduction, GeneticLeukemia, ExperimentalHIVVirus ReleaseRous sarcoma virusInfectious Anemia Virus, EquineEvolution, MolecularSequence Homology, Amino AcidPrimatesAvian myeloblastosis virusDeltaretrovirus InfectionsHeLa CellsPolymerase Chain ReactionFusion Proteins, gag-polDNA PrimersHuman T-lymphotropic virus 2Friend murine leukemia virusRNA, MessengerTrager duck spleen necrosis virusPlasmids3T3 CellsCatsTumor Virus Infectionsgag Gene Products, Human Immunodeficiency VirusVisna-maedi virusSequence AlignmentSequence Analysis, DNAViral Interference