Scientists Get Skin Cells to Act Like Stem Cells, but Much Work Remains
Also: Some researchers fear a new study could lead people to believe that weighing too much is not as big a health problem as many had thought. And we answer a question about the AIDS virus.03 December 2007
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Correction attached
Correction: Japanese researcher Shinya Yamanaka was misidentified in this story as Shinya Kamanaka.