Today's Health Links October 21, 2013 by Martin Ettington | Oct 21, 2013 | Healthy Aging | 0 comments Blood stem cells age at the unexpected flip of a molecular switch Scientists have found a novel and unexpected molecular switch that could become a key to slowing some of the ravages of getting older as it prompts blood stem cells to age. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website