Figure 1.

Representative ESI mass spectra of partially depolymerized and purified CS/DS size exclusion chromatography fractions in the negative mode, (A) the spectrum obtained from the dp4 fraction and (B) that from the dp6 fraction.

Representative ESI mass spectra of partially depolymerized and purified CS/DS size exclusion chromatography fractions in the negative mode, (A) the spectrum obtained from the dp4 fraction and (B) that from the dp6 fraction.