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. Author manuscript; available in PMC: 2021 Dec 29.
Published in final edited form as: Anal Chem. 2021 Feb 25;93(10):4449–4455. doi: 10.1021/acs.analchem.0c04462

Figure 4.

Figure 4.

MS spectra of mixing native Fc glycopeptide 11 with its isotope-labeled counterpart 6 in the ratios of (A) 5:1, (B) 1:1, (C) 1:5, and(D) 1:10. Panel (E) illustrates the linearity of experimental ratios vs theoretical ratios.