Escherichia coli 6 article 6 chloramphenicol 6 erythromycin 6 nalidixic acid 6 nonhuman 6 rifampicin 6 tetracycline 6 Animals 4 Anti-Infective Agents 4 Bacterial Outer Membrane Proteins 4 BepC gene 4 Brucella suis 4 Cloning, Molecular 4 Drug Resistance 4 Female 4 Membrane Transport Proteins 4 Mice 4 Mice, Inbred BALB C 4 Phylogeny 4 Polymerase Chain Reaction 4 TolC protein 4 Virulence 4 acriflavine 4 amikacin 4 ampicillin 4 animal cell 4 antibiotic resistance 4 antiinfective agent 4 bacterial gene 4