Ampicillin ResistanceAmpicillinPenicillin ResistanceR FactorsGene Expression ProfilingCluster AnalysisOligonucleotide Array Sequence AnalysisGenomeHaemophilus influenzaeEnterococcus faeciumAnti-Bacterial AgentsDrug Resistance, MicrobialMicrobial Sensitivity Testsbeta-LactamasesEscherichia coliDrug Resistance, BacterialConjugation, GeneticDNA, BacterialPlasmidsGenome, BacterialPenicillinasePenicillinsChloramphenicol ResistanceGenome, ViralPenicillin-Binding ProteinsExtrachromosomal InheritanceDrug ResistanceTetracyclineDrug Resistance, Multiple, BacterialShigella sonneiHaemophilus ducreyiTransformation, BacterialTransformation, GeneticDNA Transposable ElementsHaemophilus InfectionsTrimethoprimBase SequenceEnterobacteriaceaeGenome, PlantPenicillin GMuramoylpentapeptide CarboxypeptidaseGenome, HumanSulbactamMutationPeptidyl TransferasesBacterial ProteinsStreptomycinChromosomes, BacterialGram-Positive Bacterial InfectionsSerine-Type D-Ala-D-Ala CarboxypeptidaseHexosyltransferasesRecombination, GeneticMolecular Sequence DataGenes, BacterialDrug Resistance, NeoplasmDNA Restriction EnzymesDrug Resistance, MultiplePivampicillinDNA, CircularFecesGenome, MitochondrialSequence Analysis, DNAGenesNucleic Acid HybridizationCloning, MolecularDisease ResistancePolymerase Chain ReactionGenome, FungalCulture MediaVascular ResistancePhylogenyDrug Resistance, ViralDNA, RecombinantGenome SizeChloramphenicolGenome, ArchaealEvolution, MolecularGentamicinsChromosome MappingGenetic VectorsGenome, InsectTetracycline ResistanceGenome, ProtozoanEnterococcus faecalisGenomicsbeta-Lactam ResistanceAmino Acid SequenceSulfamethoxazolebeta-LactamsPlant DiseasesCephalosporinsSpecies SpecificityPenicillanic AcidPhenotypeCloxacillinDysentery, BacillaryGenome, ChloroplastBacteriaShigellaAmoxicillin