June 6, 2003

Senators Grill NIH Director Over Restrictions on Stem-Cell Research

By JEFFREY BRAINARD

Two U.S. senators who have staunchly supported biomedical research lambasted officials from the National Institutes of Health last month, saying that the Bush administration's restrictions on research with human embryonic stem cells may be slowing progress in a promising field of medicine.

Sens. Arlen Specter and Tom Harkin suggested that NIH officials were improperly playing down the importance of recent discoveries indicating that some types of embryonic stem cells, which the

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