How were the monkeys cloned using 'Dolly the sheep' method?
Chinese researchers have successfully cloned two genetically identical macaque monkeys using somatic cell nuclear transfer, used to clone Dolly the sheep in 1996. The nuclei of eggs from a monkey were removed and fused with foetal cells from another monkey. Using the technique, 79 embryos were produced and implanted into 21 surrogates, resulting in six pregnancies and two successful births.