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193 nm ultraviolet photodissociation (UVPD) of deprotonated human milk oligosaccharides. (A) Product ion spectra of singly deprotonated LST b (m/z 997) employing (A) collision-induced dissociation (CID) and (B) 193 nm UVPD. The corresponding (C) CID and (D) UVPD fragmentation patterns and assignments. The precursor ion is labeled with an asterisk. Reproduced with permission from ref (76). Copyright 2011 American Chemical Society.
