Danish scientists have managed to extract a complete human DNA sample from a piece of birch pitch more than 5,000 years old, used as a kind of chewing gum, a recently published study has revealed.

Researchers in Denmark recovered human DNA from a 5,700-year-old piece of birch pitch
used as a kind of ‘chewing gum [Credit: Theis Jensen/AFP]The Stone-Age sample yielded enough information to determine the source’s sex, what she had last…

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Source: archeo