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. 2017 Apr 25;7:1162. doi: 10.1038/s41598-017-01341-y

Figure 2.

Figure 2

MALDI-TOF mass spectra for the glycopeptide enrichment from 250 fmol/μL HRP tryptic digest: (a) before enrichment, and (b) after treatment; from 1 pmol/μL IgG: (c) before enrichment, and (d) after treatment; from 200 fmol/μL β-Casein: (e) before enrichment, and (f) after treatment, where glycopeptides were marked with Arabic Numerals in red, phosphopeptides were marked with Arabic Numerals in green, and Δ indicates the losses of phosphoric acid.