Drug Resistance, BacterialDrug Resistance, MicrobialAnti-Bacterial AgentsPoint MutationMicrobial Sensitivity TestsMutationMutation, MissenseDrug Resistance, Multiple, BacterialDrug ResistanceEscherichia coliBacterial ProteinsDNA, BacterialDrug Resistance, MultipleTetracyclineMolecular Sequence DataR FactorsPlasmidsConjugation, GeneticTetracycline ResistanceGenes, BacterialStreptomycinFrameshift MutationAntibiotic ProphylaxisPolymerase Chain ReactionBase SequenceIntegronsBacteriaAminoglycosidesSequence Analysis, DNADrug Resistance, NeoplasmPenicillin ResistanceKanamycinErythromycinBacterial InfectionsStaphylococcus aureusGerm-Line MutationAmpicillinbeta-LactamasesChloramphenicol Resistancebeta-Lactam ResistanceGenotypePseudomonas aeruginosaPhenotypeDrug Resistance, ViralAmino Acid SequenceAmpicillin ResistanceGram-Negative BacteriaDNA Transposable ElementsAnti-Infective AgentsDisease ResistanceCiprofloxacinGene Transfer, HorizontalPenicillinsGene Expression Regulation, BacterialGentamicinsEnterobacteriaceaePedigreeChloramphenicolVascular Resistancebeta-LactamsStreptomycesStreptococcus pneumoniaeDrug UtilizationStaphylococcal InfectionsBiofilmsTransformation, BacterialKanamycin ResistanceGram-Positive BacteriaCross InfectionMutation RateEscherichia coli ProteinsMacrolidesAllelesAcinetobacter baumanniiAmino Acid SubstitutionCloning, MolecularStaphylococcusEscherichia coli InfectionsFecesSpectinomycinMutagenesisDNA PrimersDNA Mutational AnalysisElectrophoresis, Gel, Pulsed-FieldKanamycin KinaseAntibiotics, AntineoplasticVirulenceUrinary Tract InfectionsMethicillin ResistanceExonsMutagenesis, Site-DirectedModels, MolecularHeterozygoteDNA GyraseFluoroquinolonesMutagenesis, InsertionalEnterococcusEnterococcus faecalisChromosome MappingRifampin