image: Protecting ancient DNA from contaminations with modern DNA molecules requires specialized precautions and methods. This image relates to a paper that appeared in the 11 Oct., 2013, issue of Science, published by AAAS. The paper, by Guido Brandt at Johannes Gutenberg University of Mainz in Mainz, Germany, and colleagues was titled, "Ancient DNA Reveals Key Stages in the Formation of Central European Mitochondrial Genetic Diversity." view more
Credit: [Image courtesy of Guido Brandt]