Lymphocytes (1 of 2) (IMAGE) Champalimaud Centre for the Unknown Caption Innate lymphocytes (in green) surround the gut (in red). Credit Courtesy of Henrique Veiga-Fernandes Usage Restrictions Attribute credit. 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.