Active efflux mechanism exist not only in FQNS resistant strains, but also in FQNS susceptible strains.
主动外排机制不仅存在于FQNS耐药菌株，而且也存在于FQNS敏感菌株。
Conclusions Active export of norfloxacin or ciprofloxacin is prevalent in clinical isolates of Entrococci and efflux mechanism is a cause of clinically fluoroquinolone resistance in Entrococci.
结论诺氟沙星、环丙沙星的主动泵出机制普遍存在于临床分离肠球菌，并且是粪肠球菌对诺氟沙星、环丙沙星的耐药机制之一。
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