11.   She hopes to develop a replacement brain tissue that would restore structure and function to lost brain areas in victims of brain diseases and injuries.

12.   The method could eventually be used to create replacement body tissue.

13.   Theoretically, the stem cells could in turn grow into virtually any cell type and serve as replacement tissue in diseases like diabetes.

14.   Therapeutic cloning would have the advantage that the replacement tissue would be an exact genetic match, so patients would not have to take anti-rejection drugs.

15.   Those uses include creating cloned embryos that would provide embryonic stem cells that could be grown into replacement tissues for repairing the brain and the heart and treating cancer.

16.   British authorities have long banned cloning aimed at developing replacement tissue, as is done in the United States.

17.   It is hoped this could lead to the growth of replacement tissue in laboratories from cells taken from patients, avoiding the problems of transplant rejection.

18.   Scientists believe they will some day be able to direct embryonic stem cells to grow into replacement tissues and organs.

19.   The law does not allow research aimed at developing new forms of replacement tissue.