Leukemia Virus, MurineMoloney murine leukemia virusEnhancer Elements, GeneticLeukemia Virus, FelineLeukemia Virus, BovineLeukemiaFriend murine leukemia virusLeukemia, ExperimentalAKR murine leukemia virusLeukemia, Myeloid, AcuteHuman T-lymphotropic virus 1Molecular Sequence DataCell LineBase SequenceAbelson murine leukemia virusVirus ReplicationReceptors, VirusLeukemia Virus, Gibbon ApeLeukemia, Lymphocytic, Chronic, B-CellRetroviridaeRauscher VirusRetroviridae InfectionsGene Products, taxRNA VirusesGenes, ViralLeukemia, LymphoidDNA, ViralVaccinia virusDefective VirusesTranscription, GeneticRNA, ViralVirus CultivationEnzootic Bovine LeukosisViral ProteinsLeukemia, Myelogenous, Chronic, BCR-ABL PositiveProvirusesVirus AssemblyTumor Virus InfectionsSimian virus 40Amino Acid SequencePromoter Regions, GeneticLeukemia, T-CellTranscription FactorsRepetitive Sequences, Nucleic AcidTransfectionCell Transformation, ViralMice, Inbred AKRGammaretrovirusRNA-Directed DNA PolymeraseGene Products, gagGene Expression Regulation, ViralDNA-Binding ProteinsAntigens, ViralVirus IntegrationSarcoma Viruses, MurineGenetic VectorsRetroviridae Proteins, OncogenicVirus SheddingCells, CulturedLeukemia-Lymphoma, Adult T-CellVirus DiseasesDeltaretrovirusOncogenic VirusesBinding SitesHuman T-lymphotropic virus 2VirionPrecursor Cell Lymphoblastic Leukemia-LymphomaMice, Inbred StrainsMink Cell Focus-Inducing VirusesGene Expression RegulationRadiation Leukemia VirusHylobatesT-LymphocytesPlant VirusesDNA VirusesSindbis VirusGene Products, envRNA, MessengerPlasmidsAvian leukosis virusTerminal Repeat SequencesTumor Cells, CulturedPolymerase Chain ReactionRecombination, Genetic3T3 CellsLeukemia, FelineLymphomaMeasles virusMice, Inbred C57BLHeLa CellsHTLV-I InfectionsInfluenza A Virus, H1N1 SubtypeMutationPreleukemiaGene Products, rexLeukemia, Monocytic, AcuteViral Envelope ProteinsCloning, MolecularGenes, pXRabies virus