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(A) MALDI MS digestion profile of a 60-min heparinase II digestion of D3. Present in the product profile are O11, H8, T5, and Di6 (see Fig. 1 for reactions). (B) Heparinase II digestion of D3 after modification at the reducing end with semicarbazide (+57.06 mass units). Products with the mass tag are designated with a “d” (i.e., T5d and Di6d).
