Dr Zavos,who recently left his post at the Kentucky Centre for Reproductive Medicine because of his links to human cloning,said six countries had offered to host the work.

• 因为将要投身克隆人的工作，扎沃斯博士刚刚辞去了在肯塔基生育药品研究中心的工作。他说6个国家已经表示希望此项目在本国进行。