Integrin Ligand (IMAGE) Technical University of Munich (TUM) Caption The ligand (green) fits like a key to a specific integrin (blue/red) on the surface of the tumor's cell membrane (beige). One of the ligand's amino acids, a lysine, can be used to attach diagnostic or anti tumor substances. Credit Francesco S. di Leva, Luciana Marinelli / Università di Napoli Federico II 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.