WASHINGTON, May 3 (UPI) -- Some of the human embryonic stem-cell lines approved for federally funded research may not meet newly recommended ethical criteria for conducting that research -- a conflict that could limit access to the cell lines even further and impede progress in the

WASHINGTON, April 26 (UPI) -- New ethical guidelines for conducting human embryonic stem-cell research issued Tuesday by the National Academy of Sciences may have little impact on scientists, but experts think they will be used by patient groups and other proponents to urge the Bush a

WASHINGTON, March 10 (UPI) -- Doctors proactively put themselves in the development stage for pay of performance programs and stem cell research funding gets a boost from the West Coast.

WORCESTER, Mass., March 7 (UPI) -- U.S. scientists said they have developed a technique to derive human embryonic stem cell lines without using animal starter cells that could carry diseases.

Dr. Robert Lanza, vice president of medical and scientific development at Advanced Cell Technology, is at the forefront of the debate over cloning and embryonic-stem-cell research.

WORCESTER, Mass., Oct. 26 (UPI) -- A top official from a U.S. embryonic stem cell company said contrary to messages coming out of the presidential race his firm lacks adequate funding.

WASHINGTON, March 3 (UPI) -- Scientists said Wednesday they have created 17 new lines of human embryonic stem cells, an advance that doubles the number of lines available to researchers and could trigger a review of President Bush's policy on the cells.

WASHINGTON, Feb. 12 (UPI) -- Some researchers remain skeptical about the validity of the announcement Thursday by Korean scientists who claimed they had successfully created human embryonic stem cells through cloning, the researchers told United Press International.

WASHINGTON, Feb. 12 (UPI) -- Scientists said Thursday that for the first time they successfully have used cloning to create human embryonic stem cells, an advance that could spur progress in the field of regenerative medicine as well as renewed debate over whether cloning should be b