Illustration psoriasis (IMAGE) Uppsala University Caption Samples were taken from both their small and large bowel. The researchers then studied different types of immune cells in the mucous membrane. Credit Maria Lampinen Usage Restrictions Credit must be given to the creator. License CC BY 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.