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. Author manuscript; available in PMC: 2019 Dec 31.
Published in final edited form as: Anal Chem. 2019 Oct 22;91(21):14049–14057. doi: 10.1021/acs.analchem.9b03746

Figure 5:

Figure 5:

MS/MS of the proton-bound dimer of leucine enkephalin (m/z 1111) (rectilinear cell): (a) collision-induced dissociation, and (b) SID. No fragments above m/z 556 were observed.