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. 2017 Feb 27;7:43587. doi: 10.1038/srep43587

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Expression levels (in Miller Units) of pneumococcal transcriptional lacZ-fusions to the promoters of pflA (a and c) and pflB (b and d) in different backgrounds grown anaerobically in CDM supplemented with 55 mM of galactose (a and b) or glucose (c and d). The activity is expressed as nmol p-nitrophenol/min/ml. Error bars show the standard error of the mean for three individual measurements each with three replicates. ***p < 0.001, ****p < 0.0001.