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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2011 Jan 14;879(7-8):467–474. doi: 10.1016/j.jchromb.2011.01.006

Figure 1.

Figure 1

The ion chromatograms of (A) 15N3-CIT and (B) 15N3-ARG in cell lysate samples after cells were incubated with 100 μM of 15N4-ARG. A peak with m/z of 179.2→71.1 and a retention time of 2.83 min (panel A) was assigned as that for 15N3-CIT. A peak with m/z of 178.2→71.1 and a retention time of 3.33 minutes (panel B) was assigned as 15N3-ARG based on their theoretical m/z and retention times.

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