Examples of Pol II, Myc, and Max occupancy. Genome browser tracks show occupancy determined by ChIP-Seq for Pol II, Myc, Max, and CTCF over the indicated gene regions in HeLa cells. The positions of the canonical CACGTG E-boxes are indicated. Regions around (A) chromosome 19 containing 10 genes, (B) PSMB2, and (C) MYC are shown. GRO-Seq data are for IMR90 cells from GSE13518 .