11.   It might even be used for cloning human embryos.

12.   Last November, a Massachusetts biotechnology company, Advanced Cell Technology, announced that it was trying to clone human embryos for research.

13.   Lu has been cloning human embryos regularly for more than a year, said Yang, who has contacted her through the student.

14.   Researchers at the University of California-San Francisco have carried out elaborate efforts to clone human embryos for therapeutic uses, senior university officials said Friday.

15.   Researchers there must obtain a license before they can clone embryos and are prohibited from allowing the embryos to develop beyond their first two weeks.

16.   Some members of Congress called for an immediate ban or moratorium on further attempts at cloning human embryos.

17.   The scene is an island off the coast of Washington State and the issue is the saving of endangered species by cloning the embryos of rare animals.

18.   There is a wide consensus among scientists and lawmakers that cloned embryos should never be implanted in women to produce babies.

19.   While Daschle, a South Dakota Democrat, said he strongly supports stem cell research, he said he did not want scientists to clone embryos for that purpose.

20.   Yang has also heard, from his Chinese contacts, of at least five other labs which have cloned human embryos on several occasions.