Link to full article Nov. 24, 2005 – Researchers at the University of Utah have discovered that when a gene called smedwi-2 is silenced in the adult stem cells of planarians, the quarter-inch long worm is unable to carry out a biological process that has mystified scientists for centuries: regeneration.
Now to find out if this gene (or a corollary) exists in mammals in general and humans in particular. Then to find out how to control it if it exists.