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Identification of five promoter activities in the rth cluster. (A) DNA fragments cloned in the GFP reporter vector are shown under the genetic map. Fragments which do not contain any promoter activity are in red. (B) The fluorescence specific activity is expressed in relative fluorescence units (RFU) and is the mean for biological triplicates. pGBG is the gfp promoterless control. Error bars show standard deviations.
