Immune Cells (IMAGE) Columbia University Irving Medical Center Caption In NF-1 gliomas, the presence of immune cells (black) in the tumor suggest immunotherapy could be an effective treatment. Credit Antonio Iavarone / Columbia University Usage Restrictions None 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.