by Christopher Thomas Scott
FEATURE	Trials of the Heart Hematopoietic stem-cell therapies increasingly enter the clinic, but the basis for their action remains unclear Email: Christopher Thomas Scott - cscott@the-scientist.com The Scientist 2005, 19(13):20 Published   4 July 2005

Adult human stem cells may offer the opportunity to use one of biomedical science's most promising technologies without the ethical dilemmas of embryonic cells. But whether the cells' plasticity-or ability to ignore germ-line heritage and differentiate into therapeutically useful tissues-warrants clinical application at this stage remains controversial.

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