Fruit Fly Protein Decoy (IMAGE) University of Pennsylvania School of Medicine Caption How Argos, a fruit fly protein, acts as a "decoy" receptor, binding and neutralizing growth factor molecules (green) that promote the progression of cancer Credit Mark Lemmon, PhD, University of Pennsylvania School of Medicine Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.