In a leap toward making stem cell therapy widely available, researchers at Weill Cornell Medical Center, New York, have discovered that endothelial cells, the most basic building blocks in the vascular system, produce growth factors that can supply copious amounts of adult stem cells and their progeny over the course of weeks.

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In a leap toward making stem cell therapy widely available, researchers at Weill Cornell Medical Center, New York, have discovered that endothelial cells, the most basic building blocks in the vascular system, produce growth factors that can supply copious amounts of adult stem cells and their progeny over the course of weeks. Until now, adult stem cell cultures would die within four or five days. "This is...