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The pattern of rpoB gene mutations in patients with MDR-TB.
| type of Mutation | Numbers of patients | Percentage (%) |
| TCG(Ser)531TTG(Leu) | 13 | 48.1 |
| GAC(Asp)516TAC(Tyr) | 1 | 3.7 |
| CAC(His)526GAC(Asp) | 2 | 7.4 |
| TCG(Ser)522CAG(Gln) | 2 | 3.7 |
| CTG(Leu)533CCG(Pro) | 1 | 3.7 |
| CAC(His)526TAC(Tyr) | 4 | 14.8 |
| TCG(Ser)531CAG(Gln) | 1 | 3.7 |
| GAC(Asp)516TAC(Tyr) | 1 | 3.7 |
| CAC(His)526GAC(Asp) | 0 | 0 |
| TCG(Ser)531TTG(Leu) | 1 | 3.7 |
| GAC(Asp)516TAC(Tyr) | 0 | 0 |
| CAC(His)526GAC(Asp) | 0 | 0 |
| GAC(Asp)516TAC(Tyr) | 1 | 3.7 |
| CAC(His)526AAC(Asp) | 0 | 0 |
| No mutation | 1 | 3.7 |
