The revival of the genome was part of the Lazarus Project that is working on a so called de-extinction program to bring the dead species of frog back to life.
So far the team of scientists was able to reactivate dead cells into living ones by unfreezing and implanting the nuclei, taken from fossilized tissues of the frog that were collected in the 1970s and preserved in a deep-freezer.
"We are watching Lazarus arise from the dead, step by exciting step. We've reactivated dead cells into living ones and revived the extinct frog's genome in the process. Now we have fresh cryo-preserved cells of the extinct frog to use in future cloning experiments," said professor Mike Archer, of the University of New South Wales, in Sydney, the leader of the Lazarus Project team.

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