Leukemia Virus, MurineTropismMoloney murine leukemia virusViral TropismLeukemia Virus, FelineLeukemia Virus, BovineLeukemiaFriend murine leukemia virusLeukemia, ExperimentalAKR murine leukemia virusAvian Sarcoma VirusesLeukemia, Myeloid, AcuteVirus ReplicationReceptors, VirusHuman T-lymphotropic virus 1Cell LineRous sarcoma virusAbelson murine leukemia virusMolecular Sequence DataLeukemia Virus, Gibbon ApeLeukemia, Lymphocytic, Chronic, B-CellRetroviridaeGenes, ViralDNA, ViralRauscher VirusRetroviridae InfectionsRNA VirusesCell Transformation, ViralGene Products, taxLeukemia, LymphoidRNA, ViralViral ProteinsDefective VirusesBase SequenceVirus CultivationVaccinia virusProvirusesVirus AssemblyGene Products, gagRNA-Directed DNA PolymeraseEnzootic Bovine LeukosisAmino Acid SequenceLeukemia, Myelogenous, Chronic, BCR-ABL PositiveTumor Virus InfectionsGenetic VectorsAvian leukosis virusLeukemia, T-CellAntigens, ViralGammaretrovirusVirionVirus IntegrationCells, CulturedMice, Inbred AKRSarcoma, AvianSimian virus 40Retroviridae Proteins, OncogenicOncogenic VirusesRetroviridae ProteinsVirus SheddingGene Expression Regulation, ViralRepetitive Sequences, Nucleic AcidSarcoma Viruses, MurineGene Products, envHuman T-lymphotropic virus 2Viral Envelope ProteinsVirus DiseasesCell Transformation, NeoplasticTransfectionLeukemia-Lymphoma, Adult T-CellDeltaretrovirusRecombination, GeneticPrecursor Cell Lymphoblastic Leukemia-LymphomaChick EmbryoMice, Inbred StrainsSindbis VirusRadiation Leukemia VirusMeasles virusT-LymphocytesPlant VirusesTranscription, GeneticDNA VirusesHylobatesOncogene Protein pp60(v-src)Terminal Repeat SequencesSpecies SpecificityHIV-1Polymerase Chain ReactionGenes, envMink Cell Focus-Inducing VirusesVirus AttachmentLeukemia, FelineGenes, gagInfluenza A Virus, H1N1 SubtypeHelper VirusesCatsInfluenza A Virus, H5N1 SubtypeGene Products, rexHTLV-I InfectionsLymphoma3T3 Cells