TABLE 1.

Transfer frequency of qnrS gene under sub-MIC of ENR.

Concentration of ENR	Transfer frequency
0	0.008 ± 0.0006
1/32 MICENR	0.012 ± 0.003
1/8 MICENR	0.01 ± 0.008
1/2 MICENR	0.03 ± 0.015

Three replicates in each group, the transfer frequency was analyzed by Student’s t-test.