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Extracted ion chromatogram (EIC) of permethylated Hex4HexNAc4Fuc1 glycans at m/z 1017.5413 (a), Hex5HexNAc4Fuc1NeuAc1 glycans at m/z 867.1213 (b) derived from human blood serum, and Hex5HexNAc4Fuc1NeuAc1 glycans at m/z 867.1213 (c) from human milk. Reprinted and modified from [23], with permission.
