AOM model (IMAGE) University of Oklahoma Caption Graphic representation and high-resolution imaging showing preference for ammonia and urea nitrogen by two different AOM organisms. This data was collected using a NanoSIMS instrument at Lawrence Livermore National Laboratory. Credit Provided by Wei Qin, University of Oklahoma. Usage Restrictions None License Original 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.