Fig. 2From: Application of the thermostable β-galactosidase, BgaB, from Geobacillus stearothermophilus as a versatile reporter under anaerobic and aerobic conditionsPromoter activities as measured by the expression levels of thermostable β-galactosidase in E. coli. The activity measurement was based upon 35 min of incubation at 60 °C. Error bars indicate standard deviation calculated from triplicate experimentsBack to article page