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Growth of strains CCGM1 and CCGM7 in subcultures of MM with succinate and ammonium. Symbols: diamonds, 1st subculture; circles, 2nd subculture; triangles, 3rd subculture. Subcultures were performed as described previously (17). MM contained 10 mM succinic acid and 10 mM ammonium chloride. Protein content was determined using the Lowry method. The standard deviations have been omitted for clarity. Results of one experiment representative of three are shown.
