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Elizabeth Murchison: Fighting a contagious cancer
Elizabeth Murchison: Fighting a contagious cancer
Duration: 13:03

What is killing the Tasmanian devil? A virulent cancer is infecting them by the thousands -- and unlike most cancers, it's contagious. Researcher Elizabeth Murchison tells us how she's fighting to save the Taz, and what she's learning about all cancers from this unusual strain. Contains disturbing images of facial cancer.