11.   Ryuzo Yanagimachi of the University of Hawaii said that even cloned mice that appear to be normal in his laboratory suffer from faulty gene expression.

12.   A Japanese research team has found that cloned mice generally have shorter life spans -- about half those of their naturally born counterparts, news reports said Monday.

13.   Researchers in Japan have discovered that cloned mice die prematurely, a finding that has ominous implications for attempts by maverick scientists who want to clone a human being.