NIH Rejects Use of 42 Stem Cell Lines for Federal Research

On Monday, NIH denied a request to approve an additional 42 human embryonic stem cell lines for use by federally funded researchers, ruling that such use violated strict new ethical guidelines. NIH's decision means only researchers using private funding will be allowed to work on those lines. NIH Director Francis Collins did approve the use of eight other new stem cell lines by federally funded researchers. A total of 75 stem cell lines now are eligible for federal funding.

• "NIH Rejects Use of Dozens of Stem Cell Colonies by Federally Funded Researchers" (Stein, Washington Post, 6/22).