Cell (IMAGE) University of Bonn Caption Dendritic cell in which two centrosomes with four so-called centrioles (green dots) have formed after contact with an antigen. Credit © Miroslav Hons / Charles University Vestec Usage Restrictions Please use this image only in connection with the press release. License Original 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.