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. Author manuscript; available in PMC: 2008 Apr 30.
Published in final edited form as: J Am Soc Mass Spectrom. 2007 Mar 8;18(5):882–890. doi: 10.1016/j.jasms.2007.02.001

Figure 1.

Figure 1

Mass spectra derived from transmission mode ion/ion charge reduction reaction: (a) 15-ms positive nano-ESI of 10 μM bovine ubiquitin (trapped), (b) 100-ms negative nano-ESI of 200 μM PFO (passing), and (c) post-ion/ion spectrum acquired at 50 kHz ejection frequency after 100-ms reaction of ions shown in (a) and (b).