Stem Cells Reverse Paralysis in Rats

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Lizz Wright Debuts With 'Salt'

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Ice Trade

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Summer Solstice

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Weapons of Mass Destruction

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Looking for HIV Vaccine Volunteers

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Scientists Criticize Limits on Stem Cell Research

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NASA Rover Heads to Mars

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Gene Therapy Shows Promise for Treating Deaf

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Mule Joins List of Cloned Animals

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SARS Treatment Tested as New Cases Arise

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U.S. Bans Canadian Beef Imports after Mad-Cow Case

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