Antibiotics at Work (IMAGE) Medical University of South Carolina Caption This image generated by X-ray crystallography shows a cephalosporin antibiotic, in pink, binding to a protein from the bacterium that causes gonorrhea. The spheres represent water molecules. Credit Image provided by MUSC Usage Restrictions Please use with credit 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.