Decellularized Rat Limb in Bioreactor (IMAGE) Massachusetts General Hospital Caption After vascular and muscle progenitors have been introduced into a decellularized rat limb, it is suspended in a bioreactor, which provides a nutrient solution and electrical stimulation to support and promote the growth of new tissues. Credit Bernhard Jank, M.D., Ott Laboratory, Massachusetts General Hospital Center for Regenerative Medicine Usage Restrictions Noncommercial use only. 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.