Copyright information:Taken from "Evaluation of reference-based two-color methods for measurement of gene expression ratios using spotted cDNA microarrays"BMC Genomics 2006;7():35-35.Published online 24 Feb 2006PMCID:PMC1402275.Copyright © 2006 Peixoto et al; licensee BioMed Central Ltd. Genes identified as differentially expressed by direct and indirect methods were selected based on 95 % credibility intervals (see Methods). Upper panels: genes identified by the RefOligo analysis are compared to those identified in RefPool and Direct analyses, and displayed as unions and intersections using Venn diagrams. Lower panels: genes identified by the One-Color analysis are compared. The total number of genes identified by each method is indicated in parenthesis.