An unnamed male Tasmanian devil cub receives a health check-up in his enclosure at Sydney's Taronga Zoo, in this October 22, 2009 file photo. A international team of scientists has discovered the genetic marker for a deadly cancer ravaging Australia's Tasmanian devil population, and they say their findings pave the way for developing treatments. Photo taken October 22, 2009. (Xinhua/Reuters Photo)
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