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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Anal Chem. 2010 Dec 30;83(3):856–865. doi: 10.1021/ac102461e

Figure 4.

Figure 4

Histograms of the log2 of the PIC-L/PIC-H ratios calculated for results obtained from both the IEF peptide fractionation and the SDS-PAGE protein fractionation of PIC-labeled human urine. The histograms display the results obtained from the individual MS1 Zoom scans preceding the MS2 scan of the precursor ion. The standard deviations from its mean are marked by a solid line while the 1-to-10, 1-to-5, and their inverse ratios are marked by a dash-dot line. The granularity of the data at the low end of the histograms reflects the 0.01 resolution of the calculated PIC-L/PIC-H ratio.