Figure 1From: Evaluation of antibacterial and cytotoxic activity of Artemisia nilagirica and Murraya koenigii leaf extracts against mycobacteria and macrophages Antibacterial activity of M. koenigii and A. nilagirica ethanol leaf extracts against M. smegmatis and M. bovis BCG. 4-5 × 105 M. smegmatis (A,C) and M. bovis BCG (B, D) were incubated with different concentrations of M. koenigii and A. nilagirica ethanol leaf extracts for 24 h in 7H9 medium and the number of colony forming units were counted after 72 h and 3 weeks for M. smegmatis and M.bovis BCG, respectively by plating serially diluted samples on 7H9 medium. Media containing bacteria alone was used as control. Experiments were performed in triplicates, means ± the standard deviation (SD) are shown. **,P ≤ 0.0005; *,P ≤ 0.01.Back to article page