Centrifugation, Density GradientTritiumThymidineDNA, ViralDNA, BacterialGenetics, MicrobialThymineNucleic Acid DenaturationRadiation EffectsPhosphorus IsotopesExtrachromosomal InheritanceCarbon IsotopesColiphagesEscherichia coliDeoxyribonucleasesCesiumDNA VirusesTransformation, GeneticChloramphenicolDNA, CircularDNA NucleotidyltransferasesCytosineUracilDNA ReplicationSucroseVirus CultivationBacillus subtilisDNALysogenyRNA VirusesMitomycinsRNA, BacterialBacteriophagesUltraviolet RaysMutationUridineVirus ReplicationVaccinia virusCulture MediaNalidixic AcidChromosomes, BacterialSimian virus 40GuanineTemperatureGenesCentrifugation, ZonalConjugation, GeneticMicrococcusNitrosoguanidinesCulture TechniquesNucleic Acid RenaturationMicroscopy, ElectronAcridinesHybridization, GeneticNucleic Acid HybridizationDrug Resistance, MicrobialHot TemperatureMolecular WeightHaplorhiniAdenineRadiation GeneticsEthidiumStreptomycinReceptors, VirusChromatographyGeneticsRecombination, GeneticR FactorsDefective VirusesPlasmidsOncogenic VirusesVirus SheddingTransformation, BacterialDensitometryMicropore FiltersTransduction, GeneticViruses, UnclassifiedVirus DiseasesCell-Free SystemChloridesSatellite VirusesAutoradiographyRNA, ViralCytosine NucleotidesBacterial ProteinsVirus AssemblyPlant VirusesFormamidesRifampinHydroxyapatitesViral ProteinsBacteriolysisNucleotidesLeucineGenetic CodeMethodsSindbis VirusMeasles virusBromouracilThymine Nucleotides