DNA, ViralBase SequenceGenome, ViralPhylogenyRNA, ViralMolecular Sequence DataVirusesGenes, ViralHIV-1Cell Transformation, ViralRNA VirusesNucleic Acid HybridizationSequence Analysis, DNADNA Restriction EnzymesRetroviridaeRecombination, GeneticGenes, envVirus ReplicationVirus IntegrationPolyomavirusCell LineGenetic VariationAKR murine leukemia virusCloning, MolecularPolymerase Chain ReactionLeukemia Virus, MurineHIV InfectionsImmunogenetic PhenomenaDNA VirusesHerpesviridaePlant VirusesAmino Acid SequenceGammaretrovirusViral ProteinsMice, Inbred AKRHepacivirusEvolution, MolecularBadnavirusVisna-maedi virusRepetitive Sequences, Nucleic AcidHelper VirusesMetagenomicsDNA, RecombinantProvirusesPlasmidsSimian virus 40Gene Products, envVirologyMutationAntigens, Viral, TumorGene Expression Regulation, ViralGenes, gagAvian leukosis virusHIVSequence AlignmentSequence Homology, Nucleic AcidGenotypeDefective VirusesSpecies SpecificityDNA PrimersSequence AnalysisHIV Envelope Protein gp120ViremiaHepatitis CBlotting, Southerngag Gene Products, Human Immunodeficiency VirusMoloney murine leukemia virusHigh-Throughput Nucleotide SequencingTranscription, GeneticLeukemia, ExperimentalHepatitis B virusNucleic Acid ConformationInfectious Disease Transmission, VerticalAcquired Immunodeficiency SyndromeViral Nonstructural ProteinsBacteriophage lambdaEpitopes, T-LymphocyteAdenoviruses, HumanGenetic VectorsDNA, NeoplasmConserved SequenceCell Transformation, NeoplasticSequence Analysis, RNATransfectionOpen Reading FramesGene Products, gagDrug Resistance, ViralSequence HomologyDisease OutbreaksCluster AnalysisViral Load5' Untranslated RegionsHaplorhiniDNAAntigens, ViralModels, GeneticCell Line, TransformedRestriction MappingAvian Sarcoma VirusesPapillomaviridae