The number of TSCs as a function of their position relative to the nearest known mRNA start. Negative numbers mean the nearest known mRNA start is upstream of the TSC. The vertical axis is shown on a logarithmic scale. The figure shows only the 46,293 TSCs (62.3%) that have a known mRNA start within 1,000 bp.
Balwierz et al. Genome Biology 2009 10:R79 doi:10.1186/gb-2009-10-7-r79