10. Guo T, Peters AHFM, Newmark PA: A bruno-like gene is required for stem cell
maintenance in planarians. Dev Cell 2006, 11:159-169.
11. Lander AD: The ‘stem cell’ concept: is it holding us back? J Biol 2009, 8:70
See other regeneration and stem cell articles http://jbiol.com/content/8/8/70 and
http://jbiol.com/content/9/2/15