Germinal centers (IMAGE) Rockefeller University Caption Recall germinal centers formed in response to a secondary infection generate a second line of defense, rebuffing memory B cells in favor of training naive ones. Credit Laboratory of Lymphocyte Dynamics at The Rockefeller University Usage Restrictions Image may only be used to illustrate research described in the accompanying 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.