J. Lichtinger, Technische Universitaet Muenchen (image) Technical University of Munich (TUM) Share Print E-Mail Caption J. Lichtinger examins brain tissue samples at TUM's Research Neutron Source FRM II before they are exposed to a focused cold neutron beam of highest intensity at the measuring station for prompt gamma activation analysis. His special designed detector can detect traces as low as 0.45 nanograms of lithium per gram of tissue. Credit Wenzel Schuermann / TU Muenchen Usage Restrictions None Share Print E-Mail 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.