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. Author manuscript; available in PMC: 2014 Nov 12.
Published in final edited form as: J Am Soc Mass Spectrom. 2011 Jul 6;23(4):577–593. doi: 10.1007/s13361-011-0190-0

Figure 2.

Figure 2

HPLC-ESI-MS spectra of underivatized and DMBNHS derivatized phosphopeptide no. 39 (pSPGAPGPLTLK) [panels (A) and (B), respectively] and phosphopeptide no. 32 (pYATPQVIQAPGPR) [panels (C) and (D), respectively]