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MALDI-TOF-MS spectra of permethylated N-glycans from fetuin, demonstrating the advantage of solid phase permethylation utilizing a microspin column (B) or fused-silica capillary (C) compared to the conventional in-solution method (A). Reprinted and modified from Kang, P., et al., 2005 (P. Kang et al., 2005), with permission. Copyright (2005) John Wiley and Sons.
