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. 2012 Mar 9;23(6):1024–1028. doi: 10.1007/s13361-012-0359-1

Figure 2.

Figure 2

ESI-MS spectra of peptide 10 (a) and its analog with two deuterons at α-carbon atom (b) and the mixture of these two peptides in molar ratio 1:1 (c) and 1:2 (d)