Ampicillin ResistanceAmpicillinR FactorsPenicillin ResistanceAnti-Bacterial AgentsDrug Resistance, MicrobialMicrobial Sensitivity TestsHaemophilus influenzaeEnterococcus faeciumDrug Resistance, Bacterialbeta-LactamasesConjugation, GeneticEscherichia coliDNA, BacterialPlasmidsChloramphenicol ResistancePenicillinasePenicillinsPenicillin-Binding ProteinsExtrachromosomal InheritanceDrug Resistance, Multiple, BacterialDrug ResistanceTetracyclineTransformation, BacterialShigella sonneiDNA Transposable ElementsHaemophilus ducreyiTransformation, GeneticTrimethoprimHaemophilus InfectionsEnterobacteriaceaeStreptomycinGenes, BacterialBacterial ProteinsMuramoylpentapeptide CarboxypeptidasePenicillin GSulbactamDisease ResistancePeptidyl TransferasesGram-Positive Bacterial InfectionsDrug Resistance, MultipleHexosyltransferasesChromosomes, BacterialSerine-Type D-Ala-D-Ala CarboxypeptidaseMutationMolecular Sequence DataBase SequenceDrug Resistance, NeoplasmFecesTetracycline ResistanceRecombination, GeneticPivampicillinDNA Restriction EnzymesPlant Diseases