Ampicillin ResistanceAmpicillinPenicillin ResistanceR FactorsHaemophilus influenzaeEnterococcus faeciumAnti-Bacterial AgentsDrug Resistance, MicrobialMicrobial Sensitivity Testsbeta-LactamasesDrug Resistance, BacterialEscherichia coliConjugation, GeneticPenicillinaseDNA, BacterialPlasmidsPenicillinsChloramphenicol ResistancePenicillin-Binding ProteinsExtrachromosomal InheritanceDrug ResistanceTetracyclineShigella sonneiDrug Resistance, Multiple, BacterialHaemophilus ducreyiTransformation, BacterialHaemophilus InfectionsTransformation, GeneticTrimethoprimEnterobacteriaceaeDNA Transposable ElementsPenicillin GMuramoylpentapeptide CarboxypeptidaseSulbactamPeptidyl TransferasesStreptomycinGram-Positive Bacterial InfectionsSerine-Type D-Ala-D-Ala CarboxypeptidaseHexosyltransferasesBacterial ProteinsDrug Resistance, NeoplasmMutationChromosomes, BacterialDrug Resistance, MultiplePivampicillinFecesDNA Restriction EnzymesGenes, BacterialRecombination, GeneticBase SequenceDNA, CircularDisease ResistanceCulture MediaMolecular Sequence DataVascular ResistanceGenesDrug Resistance, ViralNucleic Acid HybridizationCloning, MolecularPolymerase Chain ReactionChloramphenicolDNA, RecombinantGentamicinsTetracycline ResistanceEnterococcus faecalisbeta-Lactam ResistanceSulfamethoxazolebeta-LactamsCephalosporinsGenetic VectorsPenicillanic AcidCloxacillinDysentery, BacillaryAmoxicillinAnti-Infective AgentsPlant DiseasesShigellaCarbenicillinCephalexinKanamycinErythromycinDrug Resistance, FungalAirway ResistanceKlebsiellaCephaloridineCiprofloxacinProbenecidTrimethoprim-Sulfamethoxazole CombinationSalmonellaTalampicillinSalmonella InfectionsNitrofurantoinAminoglycosidesVancomycin ResistanceEscherichia coli InfectionsBacteriaPhenotypeResistance TrainingProteusDrug Therapy, Combination