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. 2012 Jul 30;13:349. doi: 10.1186/1471-2164-13-349

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Copyright ©2012 Ren et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comparison of the transcriptional levels of sporulation-related genes between the 824ccpA and 824WT. (A) the sporulation cascade proposed in C. acetobutylicum[77,78]. (B) Time-course study of expression profiles of the sporulation-related genes in the 824WT strain (left panel), the 824ccpA strain (middle panel) and between these two strains (right panel). Red and green indicate higher and lower expression, respectively. The reported values for time-course gene expression profile of 824WT strain or 824ccpA strain are the expression ratios compared to the first (middle-exponential) time point M.