Algae Bacteria Model (IMAGE) Newcastle University Caption The figure shows a schematic of the processes that we considered in out mathematical model, including the production of dissolved organic carbon (DOC) by the algae and its assimilation by the bacteria, and the production of vitamin B12 by the bacteria an its assimilation by the algae. Credit The authors 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.