Fig. 3From: Alkaloid extracts from Combretum zeyheri inhibit the growth of Mycobacterium smegmatis The growth inhibitory properties of alkaloid extracts from C. zeyheri on Mycobacterium smegmatis. The broth microdilution method was used to determine growth inhibitory properties of extracts using a 96-well microtitre plate. A minimum inhibitory concentration of 125 μg/ml was observed and the optical densities of the wells were read using a microplate reader (Tecan Genios-Pro microplate reader, GrÖdig, Austria) at 590 nm. Values are the mean of ± SD for n = 4.*** P < 0.001 in comparison with the cells exposed to the zero concentration of extractBack to article page