Ampicillin ResistanceAmpicillinPenicillin ResistanceR FactorsHaemophilus influenzaeEnterococcus faeciumAnti-Bacterial AgentsDrug Resistance, MicrobialMicrobial Sensitivity Testsbeta-LactamasesEscherichia coliDrug Resistance, BacterialConjugation, GeneticDNA, BacterialPlasmidsPenicillinasePenicillinsChloramphenicol ResistancePenicillin-Binding ProteinsExtrachromosomal InheritanceTetracyclineDrug ResistanceDrug Resistance, Multiple, BacterialShigella sonneiHaemophilus ducreyiTransformation, BacterialHaemophilus InfectionsTransformation, GeneticTrimethoprimDNA Transposable ElementsEnterobacteriaceaePenicillin GMuramoylpentapeptide CarboxypeptidaseSulbactamStreptomycinPeptidyl TransferasesGram-Positive Bacterial InfectionsMutationHexosyltransferasesBacterial ProteinsSerine-Type D-Ala-D-Ala CarboxypeptidaseChromosomes, BacterialDrug Resistance, NeoplasmMolecular Sequence DataDrug Resistance, MultipleBase SequencePivampicillinGenes, BacterialFecesDNA Restriction EnzymesRecombination, GeneticDNA, CircularDisease ResistanceCulture MediaGenesVascular ResistanceCloning, MolecularNucleic Acid HybridizationDrug Resistance, ViralPolymerase Chain ReactionDNA, RecombinantChloramphenicolTetracycline ResistanceGentamicinsEnterococcus faecalisbeta-Lactam Resistancebeta-LactamsSulfamethoxazoleGenetic VectorsCephalosporinsAmino Acid SequencePenicillanic AcidPlant DiseasesCloxacillinDysentery, BacillaryAmoxicillinAnti-Infective AgentsErythromycinShigellaPhenotypeKanamycinCarbenicillinCephalexinDrug Resistance, FungalAirway ResistanceSalmonellaKlebsiellaTime FactorsCiprofloxacinCephaloridineProbenecidTrimethoprim-Sulfamethoxazole CombinationSalmonella InfectionsTalampicillinNitrofurantoinEscherichia coli InfectionsAminoglycosidesSequence Analysis, DNAVancomycin ResistanceBacteria