Amyloid Fibrils in Semen (image) Gladstone Institutes Caption Amyloid fibrils in semen, shown here in red, enhance HIV infection by helping HIV -- shown in green -- find and attach to its target, CD4 T white blood cells. Credit Nadia Roan/Gladstone Institutes Usage Restrictions Please contact the Gladstone Institutes for reprint permissions. 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.