Kentrophoros sp. (1 of 2) (IMAGE) Max Planck Institute for Marine Microbiology Caption Live image of Kentrophoros sp. from Elba, Italy. This ciliate, a single giant (>1 mm) eukaryotic cell carries several million bacterial symbionts everywhere it goes, and harvests them for food. Half the biomass visible in this image is bacterial. Credit Brandon Seah/Max Planck Institute for Marine Microbiology Usage Restrictions To be used only in the context of this publication and citing the proper copyright. 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.