Figure 2
From: Identification of a mycobacterial hydrazidase, an isoniazid-hydrolyzing enzyme

Effect of synthetic media additives on the isoniazid (INH)-hydrolyzing activity of Mycobacterium smegmatis. M. smegmatis MC2155 cells grown in 7H9 medium for 40Â h were transferred to synthetic media containing the indicated components and incubated for 8Â h. The activities of resting cells were normalized by the optical density (OD) of the cell suspension measured at 600Â nm. Dots and bars indicate individual values and the mean of triplicate cultures. Error bars indicate standard deviations.