1. Institute
of Microbiology v.v.i., Czech Academy of Sciences, Videnska 1083, Prague 142 20, Czech Republic
2. Department
of Biochemistry, Faculty of Sciences, Charles University, Hlavova 8, Prague 128 43, Czech Republic
3. Department
of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, 3970 Reservoir Road NW, Washington, DC 20007, United States
4. The
Glycomics Center, University of New Hampshire, Durham, New Hampshire 03824, United States
5. Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC 20007, United States