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(a) Photosynthetic growth of suppressor strains SBK18, SBK20, SBK21, and SBK23, compared to growth of SB1003 and SBK1. (b and c) Absorption spectra (normalized to light scattering at 650 nm) of intact cells from oxygen-deprived (b) and photosynthetic (c) cultures of the representative suppressor strain SBK23 against those of the wild-type SB1003 and orf162b mutant SBK1 strains. The vertical axes give absorbance units, and the horizontal axes give wavelengths (in nanometers).
