RWV Bioreactor (IMAGE) Arizona State University Caption A device known as a RWV (rotating wall vessel) bioreactor was used to simulate the conditions of microgravity encountered by cells during spaceflight missions. Credit The Biodesign Institute at Arizona State University Usage Restrictions None License Original 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.