LIF Expressed in the Pancreas (IMAGE) Salk Institute Caption Caption: LIF (green), expressed mainly in activated pancreatic stellate cells, is shown along with immune cells (purple) and cancer cells (yellow) in pancreatic cancer tissue. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.