The Tasmanian devil has shown us that, not only can cancer be a contagious disease, but it can also threaten an entire species with extinction.
ﻟﻘﺪ ﺍﺭﺍﻧﺎ ﺍﻟﻌﻔﺮﻳﺖ ﺍﻟﺘﺎﺳﻤﺎﻧﻲ ﺍﻥ ﺍﻟﺴﺮﻃﺎﻥ ﻟﻴﺲ ﻣﻦ ﺍﻟﻤﻤﻜﻦ ﺍﻥ ﻳﺼﺒﺢ ﻣﻌﺪﻳﺎ ﻓﻘﻂ ﻟﻜﻦ ﺑﺈﻣﻜﺎﻧﻪ ﺍﻥ ﻳﻬﺪﺩ ﻓﺼﻴﻠﺔ ﻛﺎﻣﻠﺔ ﺑﺎﻻﻧﻘﺮﺍﺽ