Distributions of histone modifications and Pol II relative to sLADs in C2C12 myoblasts. (A) Proportions of ChIP-seq peaks of histone modifications and Pol II within sLADs (black) or within non-sLADs (grey) according to the peak center. ChIP-seq peaks were obtained from [35, 37]. (B) Ratios of ChIP-seq peak densities in non-sLADs to those in sLADs for each histone modification and Pol II. The peak densities in sLADs and in non-sLADs were computed as the ChIP-seq peak number divided by the genome coverage. Peak density ratios were plotted in the log2 scale at the vertical axis.