Bones at German Bronze Age Battle Site (IMAGE) Stony Brook University Caption Various bones at a Bronze Age battle excavation site, some of which were genetically tested to determine the presence of the lactase-persistent gene. Credit Stefan Sauer / Tollense Valley Project Usage Restrictions None License Licensed 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.