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Compositional analysis of exopolysaccharides purified from Rhizobium leguminosarum 3841, wt (a) and 17B, mutant (b). Gas–liquid chromatography analysis of exopolysaccharide indicated a similar composition characteristics for HMW acidic exopolysaccharide. Abbreviations: GlcA, glucuronic acid; Gal, galactose; PvGal, 4,6-pyruvate acetal of galactose; Glc, glucose; Std, inositol used as a standard.
