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. 2020 Feb 28;92(6):4292–4300. doi: 10.1021/acs.analchem.9b04961

Figure 3.

Figure 3

Mass spectra obtained during DI-ESI-MS of myoglobin dissolved in 0.01 M (A) or 0.2 M (B) ammonium acetate, ammonium formate, or ammonium bicarbonate (all pH 6.9).