Fig. 3From: The significance of aspartate on NAD(H) biosynthesis and ABE fermentation in Clostridium acetobutylicum ATCC 824RT-PCR analysis the transcriptional level of NADH de novo synthesis genes. a The transcriptional level of nadA; b the transcriptional level of nadB; c the transcriptional level of nadC. The data are the means and standard deviations of three replicates (**P ≤ 0.01; t test)Back to article page