Leukemia Virus, BovineLeukemia Virus, FelineLeukemia Virus, MurineEnzootic Bovine LeukosisLeukemia, ExperimentalRetroviridae InfectionsMoloney murine leukemia virusFriend murine leukemia virusLeukemiaTumor Virus InfectionsLeukemia, FelineCatsVirus ReplicationCattle DiseasesCat DiseasesAKR murine leukemia virusLeukemia, Myeloid, AcuteCell LineCattleHuman T-lymphotropic virus 1Receptors, VirusAbelson murine leukemia virusLeukemia, Lymphocytic, Chronic, B-CellRNA VirusesLeukemia Virus, Gibbon ApeGene Products, taxRauscher VirusLeukemia, LymphoidRetroviridaeDNA, ViralRNA, ViralGenes, ViralVaccinia virusMolecular Sequence DataVirus CultivationViral ProteinsDefective VirusesVirus DiseasesAntigens, ViralLeukemia, Myelogenous, Chronic, BCR-ABL PositiveVirus AssemblyProvirusesAntibodies, ViralLeukemia, T-CellBase SequenceInfluenza A Virus, H1N1 SubtypeVirus SheddingRNA-Directed DNA PolymeraseCell Transformation, ViralGene Products, gagSimian virus 40Virus IntegrationMice, Inbred AKRGammaretrovirusSindbis VirusGene Expression Regulation, ViralAmino Acid SequenceAntiviral AgentsVirionMeasles virusOrthomyxoviridae InfectionsRespiratory Syncytial VirusesRetroviridae Proteins, OncogenicInfluenza A Virus, H5N1 SubtypePlant VirusesDNA VirusesDeltaretrovirusHuman T-lymphotropic virus 2Respiratory Syncytial Virus InfectionsLeukemia-Lymphoma, Adult T-CellOncogenic VirusesWest Nile virusPrecursor Cell Lymphoblastic Leukemia-LymphomaRabies virusRadiation Leukemia VirusInfluenza A Virus, H3N2 SubtypeHepatitis B virusRepetitive Sequences, Nucleic AcidViral Envelope ProteinsGene Products, envGenetic VectorsAvian leukosis virusHylobatesPolymerase Chain ReactionT-LymphocytesViral Plaque AssayCells, CulturedHTLV-I InfectionsVesicular stomatitis Indiana virusMink Cell Focus-Inducing VirusesGene Products, rexVirus ActivationCercopithecus aethiopsLeukemia, Monocytic, AcuteNeutralization TestsEpstein-Barr Virus InfectionsMice, Inbred StrainsSarcoma Viruses, MurineLeukemia, Hairy CellTransfection