Stem-Cell Supporters, Critics Weigh In

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Supporters and opponents of embryonic stem-cell research agree that the new development is exciting, but they disagree on whether the findings should spell the end of such research.

Michele Norris talks with Sean Tipton, president of the Coalition for the Advancement of Medical Research, and Richard Doerflinger, deputy director of Pro-Life Activities for the U.S. Conference of Catholic Bishops.



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