Reference Articles
Encyclopedia (infoplease.com)
The Columbia Electronic Encyclopedia
Stem Cells
www.infoplease.com/ce6/sci/A0907292.html
Bernard Haisch
Stem Cells Overview
Digital Universe
August 2008
www.digitaluniverse.net/stemcell/articles/view/132838
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Digital Universe
Stem Cell Treatments
Trunity Your World Your Site
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