Fig. (IMAGE) Osaka University Caption Nuclei are the toughest intracellular organelles. When aligned, they act like structural pillars supporting the structure of the gut and influencing asymmetrical changes in shape during its development. Credit Osaka University 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.