
Comparison of H3K4me3 at gene promoters in human islets and CD4+ T-cells. The square root of the summary input-normalized levels of H3K4me3 for CpG island-containing (yellow) and CpG island-less (green) genes are plotted. The CpG island-less genes in the magenta (395 genes) and blue (93 genes) boxes are modified only in one tissue or the other, indicating that this class of genes exhibits tissue-specific promoter modification.











