MicroRNAs: An emerging portrait :The Scientist [2007-10-01]


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	By Melissa Lee Phillips

MicroRNAs: An emerging portrait Fifteen years ago, no one had even heard of microRNAs. Not anymore: These small but abundant regulatory, non-coding RNAs - initially thought to be an oddity of nematode biology - appear to control gene expression in all animals, as well as in plants, some viruses, and at least one unicellular alga. So far, scientists have tracked their activity in all major organ systems, illustrated on the