I read of a man getting organ Transplant from woman who had survived cancer many years before. He developed cancer in the same organ she had it in, not the transplanted organ. Her body had developed immunity to recognize and kill her cancer cells. The recipient didn't have them and was taking immunosuppressive drugs for the Transplant. Thus he didn't have any defense. I have read (Dr. Thomas sigfried) that inserting a cell mitochondria from a cancer cell into a normal cell creates a cancer cell. Inserting a ell nucleus from cancer cell into normal cell does not create a cancer cell. Which make cancer a cellular metabolism disease.