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Absorption spectra of pigment extracts from R. gelatinosus cultures grown under photosynthetic conditions (A), darkness and low oxygenation (B), or darkness and high oxygenation (C) and harvested when cultures reached an optical density of 0.8 at 680 nm. Solid lines, WT; dotted lines, SIX9Km; dashed lines, SIX9Km/pCm358. Zero levels were shifted for better viewing.
