University of Pennsylvania







Jagged-1 Protein Stimulates Bone Growth

Scientists from the University of Pennsylvania have discovered that a protein called Jagged-1 stimulates human stem cells to differentiate into bone-producing cells. Philadelphia — Researchers…



The First All-optical Nanowire Switch

Building on their earlier research, scientists at the University of Pennsylvania have made the first all-optical photonic switch out of cadmium sulfide nanowires, an important…