Muming Poo, director of the Institute of Neuroscience of Chinese Academy of Sciences, introduces the significance of the cloned monkey models with circadian rhythm disorders at a press conference in Shanghai, east China, Jan. 23, 2019. China has cloned five monkeys from a gene-edited macaque with circadian rhythm disorders, the first time multiple monkeys have been cloned from a gene-edited monkey for biomedical research. Scientists made the announcement Thursday, with two articles published in National Science Review, a top Chinese journal in English. The cloned monkeys were born in Shanghai at Institute of Neuroscience of Chinese Academy of Sciences. (Xinhua/Jin Liwang)