HIV/AIDS Vaccine Target (IMAGE) Scripps Research Institute Caption The team funded by the CHAVI-ID grant is working on ways to help the immune system recognize and attack the HIV envelope trimer (shown here), which is masked by sugar molecules known collectively as the “glycan shield” (shown in blue). Credit Courtesy of the Burton lab, the Scripps Research Institute 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.