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Table 3 The mutation frequency of rpoB gene at different concentrations of rifampin

From: Rifampin resistance and its fitness cost in Riemerella anatipestifer

Strain

RIF concentration (μg/mL)

CFU/OD

Mutation frequency (×10−8)

ATCC 11845

0.02 (5 × MIC)

182.75

9.14

ATCC 11845

0.04 (10 × MIC)

173.25

8.66

ATCC 11845

0.1 (25 × MIC)

146.75

7.34

ATCC 11845

0.2 (50 × MIC)

138.50

6.93

ATCC 11845

0.5(125 × MIC)

20.50

1.03

ATCC 11845

1 (250 × MIC)

0

0