Method Minimal inhibitory concentration(MIC) and Mininal bactericidal concentration(MBC) were determined by double broth dilution method.

方法采用肉汤二倍稀释法测定最低抑菌浓度（MIC）和最低杀菌浓度（MBC）。

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The bactericidal activity of levofloxacin was tested using minimal bactericidal concentration (MBC) and killing curve methods.

最低杀菌浓度（MBC）用肉汤稀释法，并用杀菌曲线方法比较两种喹诺酮药物杀菌性能。

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The minimal bactericidal concentration(MBC) of roxithromycin was 4~16 times greater than the minimal inhibitory concentration(MIC).

国产罗红霉素对于所采用实验菌株的MBC要大于MIC的4～16倍。

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