Figure 2 of Zhou, Mol Vis 2016; 22:933-943.

Figure 2. The MS/MS spectra of the representative peptides of CRBB2. A: A representative tandem mass spectrometry (MS/MS) spectrum for a peptide, GEQFVFEK, from CRBB2. B: The relative quantitative reporter ions, with the observed mass tags (114–121) indicating the relative abundance of this peptide in each group.