Chinese Scientists Have Successfully Cloned Monkeys - The Atlantic

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With cloning, it is possible to genetically modify monkey cells in a dish, grow the cells in large numbers, and then create clones from them. The last step requires taking DNA out of the genetically modified cells and putting it into an egg—a procedure called somatic-cell nuclear transfer. Zhongzhong and Huahua were created this way, as was Dolly the sheep. (In 1999, scientists created Tetra the cloned monkey by splitting an eight-cell embryo into two, similar to the way twins are normally formed. This technique can create only a limited number of genetically identical monkeys.)
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