Thousands of long noncoding RNAs (lncRNAs) have been annotated, yet their functions remain unclear. Recent studies-including Schlackow et al. (2017) in this issue of Molecular Cell-using orthogonal methods investigated the expression and functions of lncRNAs, resulting in deeper appreciation for the salient differences between lncRNAs and mRNAs and the roles lncRNAs serve.
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