The study indicates that acrAB genehomologous to that in Escherchia coli is present in Klebsiellla pneumoniae, and its level of expression determines the multiple-resis-tant phenotype of the bacteria.

• 本研究表明在肺炎克雷伯菌中有类似大肠埃希菌的acrAB基因存在,其表达水平决定了多重耐药表型。