Classification of dynamic TSS usage within promoters. The classification flow of tag clusters. All of the examined tag clusters are classified into three categories - positional bias, regional bias, and others - based on CAGE tag counts from each tissue. bp, base pairs; CAGE, cap analysis of gene expression; TSS, transcription start site.
Kawaji et al. Genome Biology 2006 7:R118 doi:10.1186/gb-2006-7-12-r118