HIV MPER Region of gp41 (image) Duke University Caption Three legs of the critical gp41 HIV protein are shown in yellow. Blue and red show where antibodies can bind and neutralize the virus when the legs are extended. Credit Patrick Reardon, Leonard Spicer Usage Restrictions None 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.