video: A drop of water containing cells of BW-1 in a magnetic field. Northward is to the left side of the drop where the cells have accumulated. After several seconds, the magnetic field is reversed and the cells swim in the opposite direction (to the right). A few seconds later the field is reversed again and the cells swim to the left. This video relates to a paper that appeared in the Dec. 23, 2011, issue of Science, published by AAAS. The paper, by C.T. Lefèvre at Institut de Biologie Environnementale et Biotechnologie in Saint-Paul-lez-Durance, France, and colleagues, was titled, “A Cultured Greigite-Producing Magnetotactic Bacterium in a Novel Group of Sulfate-Reducing Bacteria.” view more
Credit: Video courtesy of Christopher T. Lefèvre and Dennis A. Bazylinski