Click Reaction (IMAGE) Institute for Basic Science Caption (top) In vitro evaluation of click reaction between antibodies (green) and nanoparticles (red) on immune cells. (bottom) Immune cells transporting nanoparticles migrate in the blood vessels. White arrows indicate yellow immune cells as they are tagged with both antibodies (green) and nanoparticles (red). Credit IBS Usage Restrictions Please indicate the 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.