Figure 6. Comparison of GFP levels of different recombinant strains. Each strain contained a different 5' end deletion mutation of the upstream sequence of cpcB gene (Figure 5), and their GFP levels in light intensity of 40.0 µmol m^-2s^-1 and 10.0 µmol m^-2s^-1 were shown, respectively.
□ indicated light intensity of 40.0 µmol m^-2s^-1;
■ indicated light intensity of 10.0 µmol m^-2s^-1.