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  		• ExPASy: GlycoMod Tool: Online software for prediction the possible oligosaccharide structures in glycoproteins from their experimentally determined masses. Maintained by the Swiss Institute of Bioinformatics.
  		• Proteoglycans: Information on various forms, including hyaluronan, proteoglycan groups, glycosaminoglycans, biosynthesis, structure, isolation, separation, purification and analysis at the Department of Anatomy, University of Kuopio, Finland.
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