Dendritic Cells Have Memory, Too (IMAGE) Michigan Medicine - University of Michigan Caption Dendritic cells have their own form of program memory that hinges on a well-known immune signaling molecule called TNFalpha. Credit Stephanie King Usage Restrictions No commercial use. 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.