Figure 2From: Using a spike-in experiment to evaluate analysis of LC-MS data Base peak chromatograms of the MassPrep peptides. The chromatograms are zoomed into each of the 13 unique features whose m/z and retention time values match with those of the MassPrep peptides, in comparison of serum with spike-in peptides (+MassPrep) and serum alone (-MassPrep) groups.Back to article page