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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Int J Mass Spectrom. 2011 Mar 1;300(2-3):118–122. doi: 10.1016/j.ijms.2010.06.032

Figure 1.

Figure 1

ESI-MS of bovine carbonic anhydrase II (bound to zinc) in (a) 20 mM ammonium acetate (pH 6.8) and (b) 20 mM ammonium acetate with 0.5% v/v m-NBA.