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. 2001 Feb;67(2):1004–1007. doi: 10.1128/AEM.67.2.1004-1007.2001

FIG. 1.

FIG. 1

Growth of B. licheniformis S173 and PGA biosynthesis in medium containing casein hydrolysate as the nitrogen source. Symbols: □, OD660; ◊, PGA accumulation. At the times indicated by the arrows, the cultures were equally divided into two flasks and sodium glutamate was added to 4 g/liter to one of the flasks. Incubation of both flasks continued for 26 h, and the final yield of PGA after incubation in the presence of sodium glutamate is given in milligrams per milliliter above the arrows.