Signaling Pathway LIGHT/LTbR (IMAGE) Inselspital, Bern University Hospital Caption Activated LIGHT/LTbR signaling pathway (left) leads to symmetric cleavage and a propatation of leukemic stem cells. Credit A. Ochsenbein, University Hospital Bern Usage Restrictions None 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.