Stomach Cancer Cells (IMAGE) Columbia University Irving Medical Center Caption Stomach cancer cells from a mouse model; PDL1 molecules are stained pink. Credit Wang lab, Columbia University Irving Medical Center Usage Restrictions Please include photo 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.