Bioreactors for Osteo-4 Investigation (IMAGE) NASA/Johnson Space Center Caption This image shows the three colorful bioreactors where mouse bone cells grow within a 3-D material for the Osteo-4 investigation aboard the International Space Station. Credit Divieti Pajevic Laboratory Usage Restrictions For news coverage in connection with this news story. 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.