Ampicillin ResistanceAmpicillinPenicillin ResistanceR FactorsHaemophilus influenzaeEnterococcus faeciumAnti-Bacterial AgentsDrug Resistance, MicrobialMicrobial Sensitivity Testsbeta-LactamasesEscherichia coliDrug Resistance, BacterialConjugation, GeneticDNA, BacterialPlasmidsPenicillinasePenicillinsChloramphenicol ResistancePenicillin-Binding ProteinsExtrachromosomal InheritanceDrug ResistanceTetracyclineShigella sonneiDrug Resistance, Multiple, BacterialHaemophilus ducreyiTransformation, BacterialTransformation, GeneticBase SequenceHaemophilus InfectionsTrimethoprimMolecular Sequence DataDNA Transposable ElementsMuramoylpentapeptide CarboxypeptidaseEnterobacteriaceaePenicillin GSulbactamBacterial ProteinsPeptidyl TransferasesMutationStreptomycinHexosyltransferasesGram-Positive Bacterial InfectionsSerine-Type D-Ala-D-Ala CarboxypeptidaseGenes, BacterialChromosomes, BacterialDrug Resistance, NeoplasmDNA Restriction EnzymesGenesDrug Resistance, MultiplePivampicillinCloning, MolecularRecombination, GeneticFecesDNA, CircularPolymerase Chain ReactionNucleic Acid HybridizationDisease ResistanceCulture MediaVascular ResistanceDNA, RecombinantDrug Resistance, ViralChloramphenicolAmino Acid SequenceGentamicinsGenetic VectorsRibosomal ProteinsTetracycline ResistanceEnterococcus faecalisbeta-Lactam ResistanceSequence Analysis, DNAPlant DiseasesSulfamethoxazolebeta-LactamsCephalosporinsPenicillanic AcidCloxacillinDysentery, BacillaryPhenotypeAmoxicillinAnti-Infective AgentsErythromycinUbiquitin ThiolesteraseShigellaPhylogenyCarbenicillinCephalexinGenotypeCarrier ProteinsKanamycinDrug Resistance, FungalAirway ResistanceTranscription, GeneticRNA, MessengerKlebsiellaCephaloridineCiprofloxacinProbenecidTrimethoprim-Sulfamethoxazole CombinationSalmonellaTalampicillin