A Blood Factor Involved in Weight Loss and Aging (image) Institut Pasteur Share Print E-Mail Caption Left: neurogenesis induced by GDF11 supplementation in aged blood. Right: absence of neurogenesis with aged blood. Credit © Institut Pasteur Usage Restrictions © Institut Pasteur Share Print E-Mail 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.