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. Author manuscript; available in PMC: 2021 May 6.
Published in final edited form as: J Am Soc Mass Spectrom. 2020 Apr 21;31(5):1140–1150. doi: 10.1021/jasms.0c00066

Figure 1.

Figure 1.

ESI mass spectra of solutions containing staphylococcal nuclease (SNase): (a) no metal and (b–g) containing metal salts. All solutions contain 120 mM ammonium acetate. The corresponding deconvoluted MS1 spectra are shown in Figure S3.