The timeline of cancer has now been extended to over a million years after scientist have found evidence in a prehistoric fossil.
원문출처 : http://www.cnn.com/videos/tv/2016/07/29/cancer-million-year-old-fossil-orig.cnn
원문출처 : http://www.cnn.com/videos/tv/2016/07/29/cancer-million-year-old-fossil-orig.cnn