Short RNAs show a long history

MicroRNAs, the tiny molecules that fine-tune gene expression, were first discovered in 1993. But it turns out they've been around for a billion years.

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news142084740.html">Short RNAs show a long history</a></p> <p>MicroRNAs, the tiny molecules that fine-tune gene expression, were first discovered in 1993. But it turns out they've been around for a billion years.</p>