Fig. 3From: Combined enhancement of the propionyl-CoA metabolic pathway for efficient androstenedione production in Mycolicibacterium neoaurumGrowth status and cell structure. a Biomass (based on OD) of QC M3-A and WT at 120 h for different AD concentrations. b TEM image of QC M3-A and WT. Error bars indicate the standard deviation from three independent experiments and the levels of statistical significance are indicated as follows: *p < 0.05; **p < 0.01; ***p < 0.001; ns, indicates no significant difference (p > 0.05)Back to article page