Fig. 2From: Model-driven intracellular redox status modulation for increasing isobutanol production in Escherichia coli Comparison of intracellular redox cofactors in exponential phase (a), isobutanol and biomass (b) for strain LA02, LA03 and LA04. Asterisks indicate significant differences (*P < 0.05, **P < 0.01).Back to article page