Citrobacter freundiiCitrobacterCitrobacter rodentiumEnterobacteriaceae InfectionsTyrosine Phenol-LyaseEscherichiaCitrobacter koseriEnterobacteriaceaeCephalosporinasebeta-LactamasesCitrate (si)-SynthaseEnterobacterEnterobacter cloacaeMicrobial Sensitivity TestsCefotaximeDicloxacillinPyronineSerratiaGram-Negative BacteriaProteus vulgarisCephalosporinsUranium CompoundsCitric AcidAnti-Bacterial AgentsEscherichia coliBacteriaCeftazidimeKlebsiella oxytocaBacterial ProteinsSerratia marcescensGenes, BacterialCefotiamCefmenoximeMonobactamsCephaloridinePlasmidsbeta-LactamsDrug Resistance, MicrobialPenicillinaseKlebsiellaMolecular Sequence DataCephalosporin ResistanceCloxacillinbeta-Lactam ResistanceDNA, BacterialThienamycinsConjugation, GeneticGram-Positive BacteriaCefiximeKlebsiella pneumoniaeProteus mirabilisCarbapenemsProteusAmpicillinSalmonellaPenicillanic AcidBase SequenceCeftizoximeEscherichia coli ProteinsIsoelectric FocusingPotassium CitrateChromosomes, BacterialImipenem