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Elution profile on a Superdex 75 column of 28 mg of oligosaccharides generated from type III GBS polysaccharide after 22 h of ozonolysis. As judged by column calibration using standards obtained by glycosidase digestion of type III GBS polysaccharide, fractions 2–5 correspond to saccharides of two to five repeating units, with average molecular sizes of 2.0, 3.1, 4.1, and 5.1 kDa, respectively.
