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Scientists have found liquid blood inside the corpse of a 42,000-year-old foal in the Siberian permafrost - boosting hopes of bringing extinct species back to life.
It's believed to be the 'oldest blood in the world'.
And the prehistoric Lena Horse foal is claimed to be the best-preserved Ice Age animal ever found, according to Dr Semyon Grigoryev, head of the Mammoth Museum in Yakutsk.
The discovery, made by a team of scientists from the Yakutian University and Sooam Biotech Research Foundation from South Korea, showed that the foal was in in an exceptional condition without any visible damage.
Dr Grigoryev spoke with Russian news agency Tass in an interview: "The autopsy shows beautifully preserved internal organs.