Photo: #Stem cell cultures are placed under a microscope in a lab at the Reeve-Irvine Research Center at the University of California Irvine.

Despite new discoveries, stem cells remain controversial

Broadcast: Midmorning, 12/07/2007, 9:06 a.m.

Bioethics expert Jeffrey Kahn talks about the new discovery that skin cells might be used in place of embryos for stem cell research. He says the discovery may not eliminate the ethics debate.

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