Researchers led by César de la Fuente of the Perelman School of Medicine at the University of Pennsylvania, Penn Engineering and Penn Arts & Sciences have created new peptides that fight hard-to-treat “superbug” infections by punching holes in bacterial cells and stimulating immune cells to signal for more defenders. These discoveries have been made possible by the melting pot that is Penn. “People from engineering come together with people from the medical school to push forward the boundaries