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Figure 4. Reverse phase LC/MS extracted ion chromatograms of acidic tryptic digests of (A) HIC fractionated peak 4 and (B) peak 3. The EIC shows the HC99–130 tryptic peptide (MW = 3583.5 Da) and the corresponding tryptic peptide containing a 17 Da modification (MW = 3566.5 Da).
