Bacteria inside the Mussel (image) Max Planck Institute for Marine Microbiology Share Print E-Mail Caption This is a colored image from a transmission electron microscope; Bathymodiolus tissue in green; cells of Ca. Thiobarba living outside the host cells in yellow. The typical endosymbiont of Bathymodiolus mussels is colored light blue. Credit Max Planck Institute for Marine Microbiology / Nikolaus Leisch Usage Restrictions Only to be used in the context of this publication and citing the proper copyright. 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.