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Evolution of land plant genes encoding L-Ala-D/L-Glu epimerases (AEEs) via horizontal gene transfer and positive selection

Zefeng Yang, Yifan Wang, Yong Zhou, Qingsong Gao, Enying Zhang, Lei Zhu, Yunyun Hu and Chenwu Xu*

BMC Plant Biology 2013, 13:34  doi:10.1186/1471-2229-13-34

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