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And a new study published in the journal Cell to decipher a woolly mammoth RNA to be able to gain insights into the animal's muscle function, specifically the RNA that makes the protein for muscle stretching and contracting. And specimens were collected from animals dating back 10,000 to 50,000 years. Each was very well preserved. But one stood out from the other. This animal was given a name, Yuka, a ginger-colored juvenile mammoth. Yuka is about 39,000 years old, making this the first back.