DNA of the Past

Svante Pääbo began his career looking into ancient forensics and DNA a bit in secret, he tells the Guardian, as he didn't want to incur the displeasure of his advisor for conducting "frivolous" studies. To determine whether DNA could be extracted from very old samples, Pääbo bought a piece of liver and cooked it in a laboratory oven for a few days. And he was able to tease out DNA from the overcooked sample.

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