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. Author manuscript; available in PMC: 2014 Jul 18.
Published in final edited form as: J Periodontal Res. 2010 Feb;45(1):1–7. doi: 10.1111/j.1600-0765.2008.01169.x

Fig. 2.

Fig. 2

Characteristics of the dose–response curve of Escherichia coli lipopolysaccharide diluted 1:20 in normal human serum with no detectable endotoxin activity. Each point denotes an independent assay with duplicate determinations. The calculated minimal detectable dose was < 0.0125 EU/mL. The regression equation was derived from a power curve fit to the logarithm of the endotoxin activity concentrations. The percentage coefficient of variation for the assay ranged from 4.7 to 8.6% across the range of endotoxin activity concentrations in this curve. Etx, endotoxin activity; Rxn, reaction.