HLA Molecule (IMAGE) Université de Genève Caption Diagram of a HLA molecule (in blue) with its associated light chain, b2-microglobulin (in red) fixed in the membrane of a human cell and bound to a peptide derived from a virus (in yellow). Credit @DR 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.