PROTECTIVE MARKER. “One would predict that lncRNAs contain a differential set of identity elements that not only serve to prevent their decay but also retain them in the nucleus. This would especially be critical for lncRNAs that are spliced.” (LncRNAs = long non-coding RNAs).
http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1004351