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Product ion scanning MS/MS of selected proteospecific peptides. (a) T3 of alpha-globin product ion spectrum, (b) T1 of alpha-globin product ion spectrum, (c) T1 of beta-globin product ion spectrum, and (d) T2 of beta-globin product ion spectrum all obtained to identify fragment ions of highest value for MRM analysis (reprinted with permission from Yu et al., 2017, copyright 2017 Elsevier).
