Fig. 2
Modulation of MTB-induced NO production by TQ in M. Tuberculosis-infected macrophages. Raw 264.7 macrophages were infected with H37Rv and XDR-TB for 2 h at an MOI of 1:10 at 37 °C with 5% CO2, followed by drug treatment for 3 days. Nitric oxide (μM) was measured using Griess reagent. a Effect of TQ on nitric oxide production in H37Rv-infected Raw 264.7 cells. b Effect of TQ on nitric oxide production in XDR-TB-infected Raw 264.7 cells. Data represent the mean ± SD of 3 independent experiments done in triplicate. *P < 0.05, ** < 0.01, *** < 0.009 by Student’s t-test