H a relative standard deviation of about 46% (first step of the black line). Only two parameters can be determined with less than 70% standard deviation. In contrast, using a labeled substrate, 10 parameters (about 40% of the parameters) can be determined with a standard deviation of less than 70%.<p><b>Copyright information:</b></p><p>Taken from "C labeling experiments at metabolic nonstationary conditions: An exploratory study"</p><p>http://www.biomedcentral.com/1471-2105/9/152</p><p>BMC Bioinformatics 2008;9():152-152.</p><p>Published online 18 Mar 2008</p><p>PMCID:PMC2373788.</p><p></p