
Nalidixic acid and six of the new 4-quinolones eliminated F'lac and various native R plasmids from Escherichia coli at one half or one quarter the MIC. Four of eight plasmids tested were cured by all derivatives, with frequencies from 10 to 98%. Quinolones did not eliminate all plasmids that were cured by novobiocin, and vice versa.
Escherichia coli, Quinolines, Drug Resistance, Microbial, Microbial Sensitivity Tests, Plasmids
Escherichia coli, Quinolines, Drug Resistance, Microbial, Microbial Sensitivity Tests, Plasmids
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