Lymph Node (IMAGE) McGill University Health Centre Caption The image shows a lymph node in which we see normal T cells (in red) and Treg cells regulated by the FOXP3 gene (in green). Lymph nodes are small glands that are part of the lymph system which is important for body's defense system against diseases. Technique used: Confocal microscopy Credit Image credit: Ciriaco Piccirillo, Research Institute of the McGill University Health Centre 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.