To study the mechanism of multidrug resistance in c1inical isolates of Klebsiella pneumoniae and detect the dis-tribution and expression of active efflux pump gene acrAB, homologous to that in Escherichia coli.

• 目的:研究临床分离多重耐药肺炎克雷伯菌的耐药机制,检测肺炎克雷伯菌中有无类似大肠埃希菌主动外排系统AcrAB的结构基因acrAB的分布和表达。