Methods: use CCCP inhibit testing detect the existence of pump mechanismin clinical isolates, the level of mRNA expressions of acrA in clinical strains of Escherichia.

• 方法：采用CCCP抑制实验检测细菌在加入泵抑制剂前后针对环丙沙星的最低抑菌浓度的变化，查明泵机制的存在情况。