Skull Remains (1 of 3) (IMAGE) Uppsala University Caption Martina Nilsson and Marie Allen (right ) have analyzed the skulls with a hypersensitive method based on DNA from mitochondria, which allows analysis on very small amounts of DNA. Credit Hans Lundberg 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.