@article {6122, title = {Adaptive evolution of newly emerged micro-RNA genes in Drosophila}, year = {2008}, pages = {929-938}, doi = {10.1093/molbev/msn040}, url = {http://www.ncbi.nlm.nih.gov/pubmed/18296702}, author = {Jian Lu and Yonggui Fu and Supriya Kumar and Yang Shen and Kai Zeng and Anlong Xu and Richard Carthew and Chung-I Wu} }