Embryonic Stem Cell Research Does Too Much Good to Be Evil, Says Janet Rowley

Trays of human embryonic stem cells at the University of Michigan Center for Human Embryonic Stem Cell Research Laboratory in Ann Arbor, Mich.

As we work to refine guidelines, it is critical that the rules be consistent between states, with national guidelines most likely issued by the National Institutes of Health. It is noteworthy that under President Bill Clinton, an eminent committee chaired by Shirley Tilghman (now president of Princeton University) wrote guidelines for NIH-funded stem cell research. The guidelines were due to take effect in 2001, but their implementation was canceled by President George W. Bush.

Everyone benefits when science works with the political system, rather than being kept at the margins. At a time when the promise and challenges of new technology are greater than ever, we need a national conversation driven by sound science and our common values. Scientists don't expect to dictate all the rules for stem cell research or for any field with complex moral issues. But we should have a clear voice in the democratic exchange, to help ensure that our research guidelines give us the best chance of finding new treatments and enriching life.

We've lost eight years; let's get started! Only by harnessing our intellectual and financial resources nationally will we be able to realize the potential of stem cells as the therapeutic tool we all hope they will be.

• Tell us what you think: Should Stem Cell Research Be Permitted?