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. Author manuscript; available in PMC: 2006 Jan 20.
Published in final edited form as: J Am Soc Mass Spectrom. 2003 Dec;14(12):1477–1487. doi: 10.1016/j.jasms.2003.08.005

Figure 1.

Figure 1

Schematic diagram of the Berkeley-Bruker FTMS instrument with a 110 mm bore magnet. Peptide ions are stored in the UHV cell and undergo exchange reactions with D2O introduced by the variable leak valve.