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. Author manuscript; available in PMC: 2009 Dec 10.
Published in final edited form as: Radiat Res. 2007 Sep;168(3):367–381. doi: 10.1667/RR1058.1

FIG. 7.

FIG. 7

Mass spectrum of the trimethylsilylated forms of two authentic compounds, diHThy (upper panel) and diHUra (lower panel). diHThy is the only product of those being measured in this work using SIM for which the representative ion at 257 m/e is coincident with a minor ion from another co-eluting product, in this case an ion fragment from diHUra at 243 m/e. Therefore, as explained in the Materials and Methods, quantification of diHThy requires a correction based on the measured amount of diHUra in the sample.