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Glucose and glycerol metabolism in the E. faecalis Δpfl mutant. The Δpfl mutant was cultured in M-MRS broth containing 50 mM glucose (A), 100 mM glycerol (B), or 100 mM glycerol with 50 mM fumarate (C) under aerobic (●, ▲) or anaerobic (○, △) conditions. ● and ○, optical densities at 600 nm; ▲ and △, concentrations of the carbon source in the culture medium. The results are representative, and the experiment was performed at least three times.
