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Sequencing ancient DNA

The well-preserved mummy of an old man (Upper) is displayed in an exhibition in Denmark’s National Museum. The mummy was removed, as displayed, from an excavation in 1875 at Borum Eshoj, near Aarhus, Denmark. Carpenter and colleagues used hair samples from the mummy to isolate ancient DNA and validate the technique. (Lower) Valdiosera isolates ancient DNA from a different sample in a clean room—a highly sanitized laboratory—in the archaeology department at La Trobe University, Melbourne. Images courtesy of Kristian Kristiansen and Cristina Valdiosera.