uid                                                     \+                     Polymyxin B       00.00 ± 00.00   0.00 ± 0.00   **0.00 ± 0.00**   Colistin                                        0.00 ± 0.00                                                                     0.00 ± 0.00            **0.00 ± 0.00**                                    *E coli* 