RetroviridaeGenetic VectorsGenes, envGene Transfer TechniquesGene Products, envMolecular Sequence DataGenetic TherapyBase SequenceTransduction, GeneticMoloney murine leukemia virusVirus IntegrationAmino Acid SequenceNeomycinCell LineTransfectionRetroviridae ProteinsHematopoietic Stem CellsCloning, MolecularGenes, ViralProvirusesGene ExpressionMutagenesis, Insertionalenv Gene Products, Human Immunodeficiency VirusSevere Combined ImmunodeficiencyCells, CulturedDNA, ViralLuminescent ProteinsPolymerase Chain ReactionEndogenous RetrovirusesTranscription, GeneticRecombinant Fusion Proteins3T3 CellsLeukemia Virus, MurineGreen Fluorescent ProteinsRetroviridae InfectionsGene Expression Regulation, ViralDNA PrimersRNA, MessengerHIV-1beta-GalactosidaseMutationRepetitive Sequences, Nucleic AcidBlotting, SouthernAntigens, CD34Recombinant ProteinsCell DivisionTumor Cells, CulturedPlasmidsGene Products, gagEscherichia coliT-LymphocytesViral Envelope ProteinsHematopoiesisGenes, BacterialViral ProteinsBone Marrow CellsMice, SCIDMice, Inbred C57BLSequence Homology, Amino AcidVirus ReplicationRestriction MappingGenes, gagCell DifferentiationMice, Inbred BALB CGenesRNA, ViralBacterial ProteinsTime FactorsBiological ProductsTerminal Repeat SequencesHematopoietic Stem Cell TransplantationFlow CytometryGenes, polRecombination, GeneticVirionSequence Homology, Nucleic AcidAvian Sarcoma VirusesSequence AlignmentGenetic Complementation TestPromoter Regions, GeneticOpen Reading FramesBone Marrow TransplantationGene Expression RegulationDNA-Binding ProteinsBetaretrovirusMice, KnockoutRNA-Directed DNA PolymeraseKineticsSpumavirusSequence Analysis, DNAPhenotypeDNA, ComplementaryTranscription FactorsIntegrasesHIV Envelope Protein gp120Avian leukosis virusDNAHeLa CellsRetroviridae Proteins, OncogenicPhylogeny