Scientist James Thomson may be a hero to President Bush, but the admiration doesn't look to be mutual.

Thomson, a University of Wisconsin anatomy professor, played a key role in the recent discovery that skin cells doctored with four genes could achieve the versatile healing quality previously found in embryonic stem cells.

Bush and others pounced on the news, declaring that the discovery rendered obsolete the need to obtain stem cells from human embryos.

Thomson himself disputed that notion in a commentary he co-authored for The Washington Post with Alan I. Leshner, chief executive of the American Association for the Advancement of Science.

The scientists called upon Congress to override Bush's veto of legislation that would vastly increase federal funding for research on embryos left over from fertility procedures.

They called the recent discovery "a breakthrough achieved despite political restrictions," and said that misguided opposition has discouraged talented scientists from pursuing stem cell research.

Those points hold doubly true for Missouri, where scientists continue to face not only lack of financial support for potentially lifesaving research on embryos created in lab dishes, but attempts to ban it outright.

Barb Shelly, editorial board