Giant Crystal in a Cell (IMAGE) RIKEN Caption Xpa crystal inside a live cell is shown. From left: The cell seen under a light microscope, the fluorescent green Xpa crystal, the light and fluorescent images merged. Credit RIKEN 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.