NIH45-46G54W (IMAGE) California Institute of Technology Caption The increased potency of a new HIV antibody (green and blue), is explained by an insertion (pink) that contacts the inner domain of the HIV gp120 spike protein (yellow). Credit Ron Diskin/California Institute of Technology Usage Restrictions Okay 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.