1.   Because the researchers do not know how to manipulate embryonic stem cells from cows, they let the cow embryos develop into fetuses, Lanza said.

2.   Charles Looney, president of the Texas company, was in Brazil Friday delivering conventional cow embryos to a ranch there.

3.   The cow embryos grew in the surrogate mothers for five to six weeks, with the stem cells changing into useful tissues.

4.   Westhusin said he recently lost three cloned cow embryos when they failed to produce pregnancies, forcing him to start over.

5.   The accord allows the two countries to exchange bull semen and cow embryos, the news agency reported.

6.   This grew into a cow embryo.

7.   Using building material from cloned cow embryos, scientists say they have constructed miniature kidneys that appear to function similar to genuine organs.