AmpicillinPlasmidsBacteriaAmpicillin ResistanceAnti-Bacterial AgentsEscherichia coliDNA, BacterialGram-Negative BacteriaR FactorsMicrobial Sensitivity TestsConjugation, GeneticGram-Positive BacteriaSulbactamMolecular Sequence DataBacteria, AnaerobicBacterial ProteinsDrug Resistance, MicrobialPivampicillinPenicillinsPenicillin ResistanceGenes, BacterialBacteriocin PlasmidsBase Sequencebeta-LactamasesEnterobacteriaceaeSequence Analysis, DNARNA, Ribosomal, 16SHaemophilus influenzaeChloramphenicolPhylogenyDrug Resistance, BacterialTetracyclineBacteria, AerobicExtrachromosomal InheritanceEnterococcus faecalisGentamicinsPenicillinaseCloning, MolecularTrimethoprimCulture MediaTransformation, BacterialDrug Resistance, Multiple, BacterialWater MicrobiologyDNA, RibosomalDNA Transposable ElementsChromosomes, BacterialSalmonellaPenicillin GColony Count, MicrobialFecesGram-Negative Aerobic BacteriaSulfamethoxazoleAmino Acid SequenceGene Expression Regulation, BacterialMutationSpecies SpecificityCephalosporinsPseudomonasGram-Positive Bacterial InfectionsDNA Restriction Enzymesbeta-LactamsShigellaNucleic Acid HybridizationStreptomycinEnterococcus faeciumSalmonella typhimuriumDysentery, BacillaryKlebsiellaPenicillanic AcidCloxacillinGenome, BacterialGene Transfer, HorizontalTransformation, GeneticSoil MicrobiologyPolymerase Chain ReactionProteusRNA, BacterialEscherichia coli InfectionsBacterial InfectionsKanamycinCephalexinCarbenicillinDNA, RecombinantBacterial Physiological PhenomenaEnterococcusStaphylococcus aureusSalmonella InfectionsStreptococcusAmoxicillinPseudomonas aeruginosaVirulenceGram-Negative Anaerobic BacteriaShigella sonneiEnterobacterSeawaterRepliconBacterial Typing TechniquesRestriction MappingChloramphenicol ResistanceKlebsiella pneumoniae