Figure 2From: ChIP on Chip: surprising results are often artifactsSimilar ChIP signal with SeqA and RNA polymerase antibody. A Whole genome plot of RNAP and SeqA ChIP signal (log2 ratios of ChIP DNA/input DNA, see experimental procedures for details). B-C Correlation of ChIP signal with number of GATC sites. Probes were grouped according to the number of GATC sites in a region of 500 bp surrounding the probe middle position and the corresponding log2 ratios of ChIP DNA/input DNA are given as boxplots for SeqA (B) and RNA polymerase (C).Back to article page