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. Author manuscript; available in PMC: 2015 May 29.
Published in final edited form as: Int J Mass Spectrom. 2015 Feb 1;377:546–556. doi: 10.1016/j.ijms.2014.07.047

Figure 1.

Figure 1

ESI mass spectra of β-lactoglobulin (bovine) (0.5 μM) (a) with 150 mM sulfolane in ACN: H2O: FA (50:50:0.1) (inset: high resolution profile of 11+ charged molecule) and (b) protein in ACN: H2O: FA (50:50:0.1).