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The activity against H37Rv and 28-25271 strains of MTB of varying concentrations of rifampicin
| Concentration (?g per ml of medium) |
Number of colonies | |
| H37Rv strain | 26-25271 strain | |
| Control (no drug) | Innumerable | Innumerable |
| 1.0 | ND | ND |
| 1.5 | 13±3 | 10± |
| 2.0 | No growth | No growth |
| 2.5 | No growth | No growth |
| 3.0 | No growth | No growth |
Key: ND = Note done
Rifampicin showed MBC values that were about 10 times those of the methanol extract from L. camara.
