Approval Closer for Old Stem Cell Lines

Scientists who were worried about getting approval to study several popular stem cell lines can breathe easier. On Tuesday, WiCell, a nonprofit at the University of Wisconsin, asked the National Institutes of Health to add four lines to the agency's registry of cells that can be studied with federal funds. NIH will now review the lines to make sure they comply with ethical requirements laid out by the Obama Administration. Some scientists who have been using these cells—approved under the Bush-era stem cell policy—had tired of waiting and were thinking about scrapping projects that use the lines.