Leukemia Virus, FelineCatsLeukemia, FelineCat DiseasesLeukemiaImmunodeficiency Virus, FelineFeline Acquired Immunodeficiency SyndromeLeukemia, Myeloid, AcuteSarcoma Viruses, FelineLeukemia, ExperimentalCalicivirus, FelineCoronavirus, FelineLeukemia, Lymphocytic, Chronic, B-CellFeline PanleukopeniaLeukemia, LymphoidLeukemia Virus, MurineFeline panleukopenia virusRetroviridae InfectionsFeline Infectious PeritonitisLeukemia, Myelogenous, Chronic, BCR-ABL PositivePrecursor Cell Lymphoblastic Leukemia-LymphomaMoloney murine leukemia virusTumor Virus InfectionsRetroviridaeLynxReceptors, VirusPumaLeukemia, T-CellProvirusesLeukemia, Monocytic, AcuteLionsCell LineMolecular Sequence DataBase SequenceViral Envelope ProteinsLeukemia, Hairy CellAKR murine leukemia virusOncogenic VirusesLeukemia L1210Leukemia, B-CellLeukemia Virus, BovineIris NeoplasmsLentivirus InfectionsDNA, ViralLeukemia Virus, Gibbon ApeGene Expression Regulation, LeukemicLeukemia, Radiation-InducedFelisGenes, envLymphomaMyeloid-Lymphoid Leukemia ProteinRetroviridae Proteins, OncogenicAntigens, ViralAmino Acid SequenceLeukemia P388Leukemia, Biphenotypic, AcuteBone MarrowThymus NeoplasmsMinkTerminal Repeat SequencesGenes, ViralRetroviridae ProteinsAntibodies, ViralFriend murine leukemia virusGammaretrovirusHylobatesPolymerase Chain ReactionRauscher VirusHL-60 CellsLeukemia-Lymphoma, Adult T-CellCytarabineViral ProteinsFelidaeGenes, polLeukemia, Megakaryoblastic, AcuteTumor Cells, CulturedGene Products, gagHelper VirusesFusion Proteins, bcr-ablLeukemia, Myeloid, Chronic-PhaseAcute DiseaseVirus ReplicationRepetitive Sequences, Nucleic AcidRemission InductionCloning, MolecularPrecursor B-Cell Lymphoblastic Leukemia-LymphomaAntineoplastic AgentsLentiviruses, FelineSarcoma Virus, Woolly MonkeyViral InterferenceGene Products, envRed-Cell Aplasia, PureRNA, ViralSpecific Pathogen-Free OrganismsDogsCell Transformation, ViralKaryotypingDaunorubicinImmunologic CappingRecombination, Genetic