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CID of the 58/59 Da loss from (a) the triply charged MGF radical cation, [MGF+2H]3+• and (b) the doubly charged MGF radical cation, [MGF+H]2+•. Black triangles indicate fragment ions containing a Dha residue and degree signs indicate water losses. Violet, green and blue shaded peaks indicate c- and z- fragments N-terminal to lysine, glutamic acid, and glutamine, respectively. Lightning bolts indicate species subjected to activation.
