Genomic expression analysis in 10 Kb interval. A. Number of intervals in different categories of RNA-seq read coverage. RNA-seq reads were categorized as: exonic, which were reads mapped to known exon, intronic, which were reads mapped to known intron, and intergenic, which were reads mapped to known intergenic region. There were more highly expressed intervals with exonic expression than intronic or intergenic ones. B. Venn diagram illustration of the above result. Only intervals containing more than 100 reads were considered, as indicated by the dotted line in A.