“…In view of the notable fraction of the genome devoted to the production of the large array of enzymes assigned to glycan assembly [Brockhausen and Schachter, 1997;Sears and Wong, 1998;Kapitonov and Yu, 1999] it is reassuring that this investment into carrier modification will not be futile but can lead to functional relevance [Roseman, 1970;Marshall, 1972;Winterburn and Phelps, 1972;Berger et al, 1982;Olden et al, 1982;Sharon, 1984Sharon, , 1998Varki, 1993;Cook, 1994;Kopitz, 1997;Rudd and Dwek, 1997;Sharon and Lis, 1997;Mann and Waterman, 1998;Reuter and Gabius, 1999]. Indeed, the growing appreciation of the concept to consider oligosaccharides as information-storing coding units is reflected in the term 'sugar code' [Laine, 1997;Gabius, 2000].…”