New Vaccine Strategy (IMAGE) Rockefeller University Caption Dendritic cells, named for the spidery arms that shoot out in all directions, orchestrate and direct immune response. In an effort to explore a potential vaccine strategy, researchers tried to deliver antigens directly to dendritic cell MHC class II molecules (red) using autophagosomes (green). Where the colors overlap (yellow), they hit their target. Credit Rockefeller University 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.