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Chemical structures of polysaccharides used in this study, with the mannan structure for comparison. Representative repeating units are shown for mannan, heparin, and fucoidan. The average molecular weight of the fucoidan preparation used for this work is approximately 170 kD. The porcine heparin used in these experiments is unfractionated, with a range of different molecular weight species. L-fucose-2-sulfate is depicted here.
