Yong-Gang Yao1, Yong-Bin Chen2, Bin Liang2. 1. Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, and Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China. Electronic address: yaoyg@mail.kiz.ac.cn. 2. Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, and Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.