Figure 2From: Core promoter structure and genomic context reflect histone 3 lysine 9 acetylation patternsClustering of the ChIP-chip dataset for RNA polymerase. (A) Genome-wide histogram of the RNA polymerase II ChIP-chip signal (-10log(p-value)) of 4,481 aligned promoters. (B) Histograms of the three clusters.Back to article page