Citrobacter freundiiCitrobacterCitrobacter rodentiumEnterobacteriaceae InfectionsTyrosine Phenol-LyaseEscherichiaCitrobacter koseriEnterobacteriaceaeCephalosporinasebeta-LactamasesEnterobacterEnterobacter cloacaeMicrobial Sensitivity TestsCefotaximeDicloxacillinPyronineSerratiaGram-Negative BacteriaProteus vulgarisCephalosporinsUranium CompoundsAnti-Bacterial AgentsEscherichia coliBacteriaCeftazidimeKlebsiella oxytocaSerratia marcescensCefotiamBacterial ProteinsGenes, BacterialCefmenoximeMonobactamsCephaloridinebeta-LactamsDrug Resistance, MicrobialPlasmidsPenicillinaseCephalosporin ResistanceKlebsiellaCloxacillinMolecular Sequence Databeta-Lactam ResistanceThienamycinsGram-Positive BacteriaDNA, BacterialConjugation, GeneticCefiximeProteus mirabilisCarbapenemsAmpicillinKlebsiella pneumoniaeProteusPenicillanic AcidSalmonellaCeftizoximeBase SequenceIsoelectric FocusingEscherichia coli ProteinsChromosomes, BacterialImipenem