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. Author manuscript; available in PMC: 2020 Nov 5.
Published in final edited form as: Anal Chem. 2019 Oct 16;91(21):13528–13537. doi: 10.1021/acs.analchem.9b02620

Figure 4.

Figure 4.

Electropherograms of N-glycans fractionated by ion exchange, derivatized by either methylamidation or SALSA method, labeled with APTS, and separated by microfluidic CE. Detected population of sialic acid isomers is consistent with the results from exoglycosidase treatment. Of note, there are less than two α2–6-linked sialic acids for most detected structures.