Organ Cross-section (IMAGE) Emory Health Sciences Caption In this cross-section of the symbiotic organ the bacteria it contains are lit up in fluorescent green dye. Credit Microscopy image by Hassan Salem. Usage Restrictions Must include credit. 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.