cancer could be found thanks to a 188-year-old giant tortoise called Jonathan. Scientists are studying the world’s oldest known living land animal, whose health is miraculously improving with age.Jonathan, who lives on the British island of St Helena in the South Atlantic, was around at the time of Queen Victoria and is older than Big Ben and The Eiffel Tower.He was fully grown and at least aged 50 when he arrived on the island in 1882.Scientists want to find out the secret to his long life in a bid to crack the code of human cell mutation, which triggers cancer.
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