Analyzing data (IMAGE) University of Washington Caption A research team at the University of Washington and the Pacific Northwest National Laboratory examined the atomic composition of enamel samples from two human teeth. To examine the atomic composition of enamel, Jack Grimm (foreground) worked with Arun Devaraj, a materials scientist at PNNL (background), to use a technique called "atom probe tomography," which allows researchers to get a 3D map of each atom in space in a sample. Credit Andrea Starr/Pacific Northwest National Laboratory Usage Restrictions For use with appropriate credit 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.