Credit: © K. Kitzinger / Max Planck Institute for Marine Microbiology
Single-cell images of environmental marine ammonia oxidizing archaea. Panel (a) identifies the ammonia oxidizing archaea (green) and surrounding cells (blue), panel (b) reveals their uptake of cyanate. This can be determined with NanoSIMS, a technology that provides highly detailed insights into the activity of single cells. Ammonia oxidizing archaea are marked by white outlines. Scale bar is 1 μm.