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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2015 Jun 30;26(10):1686–1694. doi: 10.1007/s13361-015-1209-8

Figure 2.

Figure 2

Product ion spectra derived from CID of (a) [ARAAARA+27+H]+ generated via gas phase ion/ion reaction and (b) [ARAAARA-CONHEt + H]+ from solution phase modification. (Lightning bolt denotes ions subjected to collisional activation. Asterisks (*) denote ammonia losses whereas triangles (△) denote impurities that can be seen in isolation)