Shewanella oneidensis

AFM topograph of the metal reducing bacterium Shewanella oneidensis strain MR-1 cultivated under electron acceptor limitation to induce the production of electrically conductive appendages known as bacterial nanowires. All of the branched appendages were confirmed as electrically conductive using conductive AFM, 5 µm scan. Sample courtesy M. El-Naggar, USC and Y. Gorby, J. Craig Venter Institute.