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. Author manuscript; available in PMC: 2012 Oct 1.

Published in final edited form as: J Am Soc Mass Spectrom. 2011 Jul 15;22(10):1753–1762. doi: 10.1007/s13361-011-0197-6

Tandem mass spectra of (a) conventional CID, (b) PQD, and (c) triple quadrupole-type collision, respectively, of VNQIGTLS(phos)ES(phos)IK. Some fragment ions are labeled. The collision energy were 35%, 28%, and 41 for CID, PQD, and QqQ (based on rolling collision energy of Qtrap 4000), respectively.

Tandem mass spectra of (a) conventional CID, (b) PQD, and (c) triple quadrupole-type collision, respectively, of VNQIGTLS(phos)ES(phos)IK. Some fragment ions are labeled. The collision energy were 35%, 28%, and 41 for CID, PQD, and QqQ (based on rolling collision energy of Qtrap 4000), respectively.