1.   They announced the birth and subsequent good health of three cloned mice, created by nuclear transfer.

2.   Cloned mice also tend to have developmental abnormalities, taking longer to reach milestones like eye opening and ear twitching, Yanagimachi has found.

3.   Cloned mice can become obese and have other developmental problems.

4.   Coming weeks after a report that cloned mice die young, scientists said the experiment showed how dangerous it would be to attempt to clone a human being.

5.   In one example that seems like science fiction come true, some cloned mice that seemed normal suddenly, as young adults, grew grotesquely fat.

6.   Indeed, the study found that cloned mice had significantly shorter life spans than did their naturally born counterparts.

7.   Just two weeks ago Japanese researchers reported that cloned mice have markedly shorter lifespans than ordinary mice.

8.   Raising new concerns about the technology used to copy life, scientists said Thursday that cloned mice are prone to striking cases of obesity.

9.   Ryuzo Yanagimachi at the University of Hawaii has had perhaps the greatest success, producing five generations of cloned mice.

10.   The cloned mice were born with mild breathing problems.