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Table 2 Mutations in QRDR genes in evolved, resistant P. aeruginosa, selected by levofloxacin

From: Development of in vitro resistance to fluoroquinolones in Pseudomonas aeruginosa

Passage

Lineage1

Lineage2

Lineage3

Lineage4

Lineage5

Lineage6

0. (0MIC)

1. (1/2MIC)

2. (1MIC)

A

A

3. (2MIC)

A

A

B

4. (4MIC)

A

A

B

5. (8MIC)

A + E

A

A + B

A

B

B

6. (16MIC)

A + E

A

A + B

A

B

B

7. (32MIC)

A + E

A

A

A

B

A + B

8. (64MIC)

A + E

A

A

A

B

A

  1. A: gyrA83 (T83I; ACC → ATC); B: gyrB466 (S466F; TCC → TTC); E: parE457 (S457C; AGC → TGC)