PDAC tumors (IMAGE) Cold Spring Harbor Laboratory Caption Pancreatic ductal adenocarcinoma (PDAC) can spread like wildfire with the help of a protein called Engrailed-1. Above: PDAC tumors (dark purple) that have taken root in the lungs of mice. Credit Tuveson lab/Cold Spring Harbor Laboratory Usage Restrictions Attribution required License Original 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.