Organ Cross-section (image) Emory Health Sciences Share Print E-Mail 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. Share Print E-Mail 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.