John Cobb and Denis Duboule are in the Department of Zoology and Animal Biology and National Program 'Frontiers in Genetics', University of Geneva, Switzerland. Denis.Duboule@zoo.unige.ch
MicroRNAs are important in the development of worms, flies and plants. A new study shows how the temporal and spatial expression patterns of such RNAs can be determined in mouse embryos, providing insights into the emerging role of microRNAs in Hox gene regulation.
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