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Selected mass range comparison between the MALDI-TOF MS profiles of the permethylated N-linked glycans derived from wild type CHO cells grown in suspension (A), the Lec1 mutant cell line (B), and the Lec3. 2.8.1 mutant cell line (C). For complete annotation of the spectra, see supplemental Table S1. Data were obtained from the 50% MeCN fraction, and all molecular ions are present in sodiated form ([M + Na]+).
