Virus IntegrationRetroviridaeEndogenous RetrovirusesRetroviridae InfectionsBetaretrovirusSystems IntegrationPulmonary Adenomatosis, OvineRetroviruses, SimianGenetic VectorsLeukemia Virus, MurineProvirusesBase SequenceMoloney murine leukemia virusMolecular Sequence DataDNA, ViralTerminal Repeat SequencesCell LineIntegration Host FactorsGammaretrovirusIntegrasesAvian leukosis virusTransduction, GeneticRepetitive Sequences, Nucleic AcidRecombination, GeneticGene Products, gagMason-Pfizer monkey virusRNA-Directed DNA PolymeraseRetroviridae ProteinsGenes, gagGenes, ViralGene Products, env