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. 2009 Apr 17;191(13):4478–4481. doi: 10.1128/JB.00082-09

FIG. 4.

FIG. 4.

Gene expression. sdhC (a), ubiC (b), and rpoS (c) expression was measured as β-galactosidase activity in the wild type (filled symbols) and the ppk ppx mutant (open symbols), with corresponding fusions, at different times of growth in MT+P. Data are representative of results of at least four separate experiments performed in duplicate. MU, Miller units.