Making customized T Cells (IMAGE) Johns Hopkins Medicine Caption This is a graphic showing a process for producing large numbers of activated, customized T cells using magnetic nanoparticles and a column. Credit Credit: Karlo Perica/Johns Hopkins Medicine Usage Restrictions Please credit the photo. 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.