Rejuvenating the Home of Blood Stem Cells (IMAGE) Columbia University Irving Medical Center Caption An inflammatory signal released from old bone marrow, IL-1B, was critical in driving aging in blood stem cells. A drug, anakinra, returned the blood stem cells to a younger, healthier state. Young (top) and old bone marrow (bottom). Credit CUIMC (Emmanuelle Passegue lab) Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.