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RT-PCR detection of wbkA and wbkE mRNA in strains RB51, RB51WbkA, and RB51WbkE. Graph shows the mean values of fold change for wbkA and wbkE transcript levels in the recombinant strains RB51WbkA and RB51WbkE, respectively, relative to those of RB51, which were converted to 1. All the values are relative to those of internal control gene IF-1. Results are shown as mean ± standard deviation (n = 3).
