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TA composition of wild-type strain 4b1 (A), gltA mutant XL7 (B), and gltB mutant 4b1-INTB (C). TA preparation and analysis were done as described previously (4, 6). Peaks: 1, glycerol; 2, anhydroribitol; 3, ribitol; 4, galactose; 5, glucose; 6, glucosamine. The arrow indicates the position of the missing glucose peak in panel B.
