Developing features (IMAGE) University of Tokyo Caption These fluorescent images of live zebrafish embryos show the movement, assembly and growth of cartilage -forming cells at 48, 72 and 96 hours post fertilization. Credit 2023 Liu et al. Usage Restrictions Credit must be given to the creator. License CC BY 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.