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| Breakthrough in primate cloning | Breakthrough in primate cloning |
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| Experts have for the first time created cloned embryos from adult monkeys - a technical breakthrough that could bring efficient human cloning a step closer. | Experts have for the first time created cloned embryos from adult monkeys - a technical breakthrough that could bring efficient human cloning a step closer. |
| A team in the US created dozens of cloned embryos from a 10-year-old macaque monkey, Nature journal reports. | A team in the US created dozens of cloned embryos from a 10-year-old macaque monkey, Nature journal reports. |
| Human cloning has been dogged by controversies over faked research and technical difficulties. | Human cloning has been dogged by controversies over faked research and technical difficulties. |
| But the new technique could lead to the efficient cloning of human embryos for use in research. | But the new technique could lead to the efficient cloning of human embryos for use in research. |
| According to the Independent newspaper, the American group was able to extract stem cells from some of the cloned monkey embryos and was able to persuade these to develop into mature heart and nerve cells in the laboratory. | According to the Independent newspaper, the American group was able to extract stem cells from some of the cloned monkey embryos and was able to persuade these to develop into mature heart and nerve cells in the laboratory. |
| Scientists have welcomed news of the advance. Robin Lovell-Badge, a stem cell scientist at the National Institute for Medical Research in Mill Hill, near London, told the Independent newspaper: "Although this work has not been published yet, it is potentially significant. | Scientists have welcomed news of the advance. Robin Lovell-Badge, a stem cell scientist at the National Institute for Medical Research in Mill Hill, near London, told the Independent newspaper: "Although this work has not been published yet, it is potentially significant. |
| "There has been a worry that primates may prove to be difficult in terms of cloning." | "There has been a worry that primates may prove to be difficult in terms of cloning." |
| In 2004, a South Korean team announced that it had created the first cloned human embryos. But the study was later retracted when it emerged the lead author Dr Hwang Woo-suk had fabricated his research. | |
| The only other published example of a human embryonic clone was created at the University of Newcastle. But the clones survived for only a few days and did not produce any stem cells. | |
| The scientists behind the latest work reportedly tried to implant about 100 cloned embryos into the wombs of around 50 surrogate female macaques. However, their efforts did not result in the birth of any offspring. | The scientists behind the latest work reportedly tried to implant about 100 cloned embryos into the wombs of around 50 surrogate female macaques. However, their efforts did not result in the birth of any offspring. |
| But one author of the study said this could be down to bad luck. For example, Dolly the sheep - the first clone of an adult mammal - was only created after 277 attempts. | But one author of the study said this could be down to bad luck. For example, Dolly the sheep - the first clone of an adult mammal - was only created after 277 attempts. |