Figure 2From: How many replicates of arrays are required to detect gene expression changes in microarray experiments? A mixture model approachHistograms and estimated distribution density functions. (a-d) Two, four, six and eight replicates (z2 - z8), respectively. In (a), the solid and dotted lines are the fitted one- and two-component mixtures. In (b-d), the solid and dotted lines are the fitted and the theoretically derived mixtures.Back to article page