21.   The embryo cells could be cloned by adding their DNA to the DNA of eggs that would otherwise be discarded, because they failed to fertilize, for example.

22.   The sheep cloned from an embryo cell also had slightly shorter telomeres, but the stunting was less than with Dolly, the researchers said.

23.   To clone, scientists would essentially convert a fully developed cell into an early embryo cell.

24.   Willadsen found that it would be relatively easy to clone cows and other animals from embryo cells, which are not yet specialized.

25.   But body cells from an adult are far more plentiful than embryo cells, making the idea more feasible.

26.   German law currently prohibits the creation of embryo cells purely for research, but imports are not explicitly forbidden.

27.   It upholds a ban on creating embryo cells in Germany purely for research.

28.   Researchers have made unspecialized embryo cells transform into bone for the first time, an advance that may offer hope for repairing diseased bones and correcting genetic bone disorders.

29.   RUSSIA EMBRYOS - APTV looks at a revolutionary operation to transplant embryo cells from aborted fetuses into the brains of coma patients.

30.   Shortly afterward, scientists at the Oregon Primate Research Center said two rhesus monkeys had been cloned from embryo cells.