11.   Noto and Kaga were born after researchers took cells from an adult cow and placed them in unfertilized eggs whose own nuclei had been removed.

12.   One day after giving birth to two calves described as the first clones from cells from an adult cow, the mother died suddenly Monday, Japanese scientists said.

13.   Scientists in the United States, Japan and New Zealand have since reported cloning of calves, using cells taken from either unborn cows or adult cows.

14.   Two calves born Sunday are the first clones from cells from an adult cow, Japanese scientists said Sunday.