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. Author manuscript; available in PMC: 2013 May 28.
Published in final edited form as: J Chromatogr A. 2009 Nov 10;1217(25):4135–4143. doi: 10.1016/j.chroma.2009.11.006

Fig. 4.

Fig. 4

Standard curve. dG-C8-4-ABP calibration curves of fmol analyte on column versus the ratio of analyte to internal standard peak areas were generated in triplicate over an 8-month period. Every point from each calibration curve was also analyzed in triplicate. The linear regression line incorporates all three curves and has a slope of 0.100±0.001, a y-intercept of 0.05±0.03, and a correlation coefficient R2 of 0.99±0.08.