(VIDEO) Institute for Bioengineering of Catalonia (IBEC) This video is under embargo. Please login to access this video. Caption 3D reconstruction of mouse embryos. Colour differences indicate differences in metabolism. Credit Institute for Bioengineering of Catalonia (IBEC) Usage Restrictions Give credit 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.