MCR-9 (IMAGE) Cornell University Caption The mcr-9 gene's protein structure graphic depicts the differing protein chains (solid color ribbons) and the protein surface (mesh) surrounding it. Credit Ahmed Gaballa, Cornell University 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.