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China clones gene-edited monkeys for sleep disorder research

Chinese scientists have made clones of a gene-edited macaque to aid research of circadian rhythm disorders that are linked to sleep problems, depression and Alzheimer's disease, the official Xinhua news agency said on Thursday.

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The cloned monkeys already show signs of "negative behaviour", including sleep disorders, as well as elevated levels of anxiety and "schizophrenia-like behaviours", the paper added.