Medaka (3 of 3) (IMAGE) NASA/Johnson Space Center Caption Comparing volume and activity of the cells that break down bone density in the upper and lower jaw bones of Medaka fish after 56 days spent aboard the International Space Station with those on the ground. Credit Chatani et al, Sci. Rep. 5, 14172 (2015) Usage Restrictions None 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.