Japanese scientists produce clones of mice dead and frozen for 16 years . The cloned animals are then put back into the wild to see if they can reproduce, but only a few survive. Dolly was cloned using cells from live animals . Researchers used cells from mice that were frozen for 16 years at -20 Celsius .
Japanese scientists produce clones of mice dead and frozen for 16 years . The cloned animals are then put back into the wild to see if they can reproduce, but only a few survive. Researchers used cells from mice that were frozen for 16 years at -20 Celsius .