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Polymers of Neu5Ac, Neu5Gc, and Neu5Pr used in these studies. Top panel indicates an oligomer of (from left to right) Neu5Ac, Neu5Gc, and Neu5Pr to depict the structure of the individual Sias. Bottom panel, the five polymer substrates used in these experiments and their respective percentages of each Sia, determined by DMB-HPLC and 1H NMR.
