Figure 3From: Empirical characterization of the expression ratio noise structure in high-density oligonucleotide arraysComparison between the ratio scores from the PM-only and the PM-MM methods. Only genes with p-values (from the PM-MM method) smaller than indicated are plotted. The brightest red dots have the smallest p-values (around 10-6), whereas black dots correspond to p = 1 (upper left panel) to p = 0.01 (lower right panel).Back to article page