R FactorsExtrachromosomal InheritanceDrug Resistance, MicrobialPeptide Chain Termination, TranslationalGenetics, MicrobialTetracyclineChloramphenicolConjugation, GeneticTerminator Regions, GeneticEscherichia coliStreptomycinPeptide Termination FactorsTranscription Termination, GeneticProteusProteus mirabilisSulfanilamidesAcridinesCodon, TerminatorRho FactorSulfathiazolesGeneticsColiphagesPenicillinaseBase SequenceCephaloridineMolecular Sequence DataDNA, BacterialKlebsiellaMutationCarbenicillinPhosphotungstic AcidNeomycinAbortion, InducedDihydrostreptomycin SulfateX-Ray DiffractionTranscription, GeneticSalmonella typhimuriumCrystallography, X-RaySalmonella PhagesPenicillin ResistanceLysogenyAmpicillinModels, MolecularCodon, NonsenseDNA, CircularGenesCesiumAmino Acid SequenceSalmonellaChromosomes, BacterialCentrifugation, Density GradientAnti-Bacterial AgentsShigella dysenteriaeAbortion, LegalShigellaNucleic Acid ConformationSulfonamidesTritiumEnterobacteriaceaeSulfisoxazoleSerratia marcescensSexBacteriophagesProtein ConformationNalidixic AcidCrystallizationPlasmidsDNA ReplicationRNA, MessengerThymineCodonRecombination, GeneticProtein BiosynthesisAbortion, EugenicBinding SitesDNA-Directed RNA PolymerasesBacterial ProteinsAbortion, TherapeuticEscherichiaTemperatureCalcium ChloridePseudomonas aeruginosaF FactorRadiation EffectsMolecular WeightEthidiumOperonCulture MediaChloroformHydrogen BondingGentamicinsAbortifacient AgentsRNA Polymerase IIRNA, BacterialAbortifacient Agents, NonsteroidalMolecular BiologyAbortifacient Agents, SteroidalPolynucleotidesTrimethoprimColicins