Structure of Linked CXCR4 Molecules (image) NIH/National Institute of General Medical Sciences Share Print E-Mail Caption This is a structure of a pair of linked CXCR4 molecules (blue and gold) bound by loop-shaped peptide inhibitors (red and magenta). Credit Raymond Stevens, the Scripps Research Institute, La Jolla, Calif. Usage Restrictions Please credit the source. Share Print E-Mail 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.