Group comparison by using the 9 selected proteins.

<p>Boxplots and ROC curves for each of the significant analytes in each of the pairwise comparisons between Healthy individuals (green color) and all cancer patients combined (All SI-NET), Liver metastasis (LM), Primary tumors (PT) and Lymph-node metastasis (LNM). In the lower part of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0081712#pone-0081712-g003" target="_blank">Figure 3</a>, a Venn diagram for all significant analytes is presented. Common analytes for the discrimination of each cancer patient group and healthy controls are shown.