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. Author manuscript; available in PMC: 2009 Jun 15.
Published in final edited form as: J Am Soc Mass Spectrom. 2007 Oct 22;19(2):294–304. doi: 10.1016/j.jasms.2007.10.007

Figure 1.

Figure 1

MS/MS of [M-2H]2− precursor ion DS dp4, 1, with (A) EDD and (B) IRMPD. Insets; product ions observed by the fragmentation methods. The charge reduced species in the EDD mass spectrum is indicated with a ▼ over the peak label.