DNA, BacterialNucleic Acid HybridizationTritiumCentrifugation, Density GradientGenetics, MicrobialThymidineThymineNucleic Acid DenaturationEscherichia coliAmino Acid SequenceRadiation EffectsBase SequenceMolecular Sequence DataExtrachromosomal InheritancePhosphorus IsotopesSequence Homology, Amino AcidCarbon IsotopesSequence Homology, Nucleic AcidColiphagesDNADNA, ViralDeoxyribonucleasesCesiumTransformation, GeneticChloramphenicolCloning, MolecularGenesDNA, CircularDNA NucleotidyltransferasesCytosineUracilBacillus subtilisMutationSucroseLysogenyDNA ReplicationRNA, BacterialMitomycinsDNA VirusesBacteriophagesHybridization, GeneticBacterial ProteinsUltraviolet RaysChromosomes, BacterialCulture MediaUridineMolecular WeightNalidixic AcidGuaninePlasmidsDNA Restriction EnzymesConjugation, GeneticSequence HomologyTemperatureMicrococcusCentrifugation, ZonalSpecies SpecificityNucleic Acid RenaturationNitrosoguanidinesAcridinesHot TemperatureSequence AlignmentDrug Resistance, MicrobialR FactorsEthidiumStreptomycinRadiation GeneticsChromosome MappingChromatographyGeneticsAdenineTransformation, BacterialMicroscopy, ElectronCulture TechniquesGenes, BacterialDensitometryHaplorhinisrc Homology DomainsMicropore FiltersChloridesRecombination, GeneticDNA, ComplementaryNucleotidesCell LineAutoradiographyHydroxyapatitesCytosine NucleotidesTransduction, GeneticCell-Free SystemBacteriolysisRifampinGenetic CodeFormamidesRNA, MessengerRestriction MappingLeucineVirus CultivationExonucleasesBromouracilCarbon Radioisotopes