The following article shows once more that adult stem cells have better potential than embryonic stem cells. Not only that, but they lack the moral ethical concerns as well. While embryonic stem cells still have yet to show themselves as being anything other than a tumor-forming broken promise, progress is made with adult stem cells. Below are some quotes from the article followed by its full citation and a link.

"In a leap toward making stem cell therapy widely available, researchers at the Ansary Stem Cell Institute at Weill Cornell Medical College have discovered that endothelial cells, the most basic building blocks of the vascular system, produce growth factors that can grow copious amounts of adult stem cells and their progeny over the course of weeks."

"This new finding sets forth the innovative concept that blood vessels are not just passive conduits for delivery of oxygen and nutrients, but are also programmed to maintain and proliferate stem cells and their mature forms in adult organs."

"If this vascular-based stem cell expansion strategy continues to be validated, physicians could use any source of hematopoietic (blood-producing) stem cells, propagate them exponentially, and bank the cells for transplantation into patients."

Source:

"Breakthrough Reveals Blood Vessel Cells Are Key to Growing Unlimited Amounts of Adult Stem Cells", ScienceDaily, March 7th, AD 2010, http://www.sciencedaily.com/releases/2010/03/100304184542.htm, accessed April 3rd, AD 2010.