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. Author manuscript; available in PMC: 2013 Sep 17.
Published in final edited form as: Chem Res Toxicol. 2012 Jul 3;25(9):1842–1861. doi: 10.1021/tx3000494

Figure 3.

Figure 3

MS3 spectra of the y2 fragment ions of product 2-d-X after incorporation of A) two deuterons, B) three deuterons. X stands for deuterium incorporation at Cys[αC], Cys[βC], or Gly[αC].