Table 1 Human and mouse unspliced EST clusters overlapping a predicted TSS peak in their putative 5’ region and their orientation relative to the surrounding RefSeq gene. RefSeq TSS are all unspliced EST cluster that overlap any 5’UTR or that are located completely within the upstream region of a RefSeq gene. TINs and PINs are defined as in Fig. 1. All unspliced EST cluster that have an overlap with the 3’UTR but not with the 5’ UTR are interpreted as uaRNAs. “Sense” and “Antisense” are relative to the reading direction of the RefSeq gene. “Ambiguous” clusters could not be assigned to an orientation because of conflicting information on their directions. The column “All” lists the number of corresponding unspliced EST clusters without considering an overlap with CAGE-tags

From: Evolution of the unspliced transcriptome