| Abstract: |
Cancer can happen to anyone. For a long time， man has no idea what causes cancer. Since cure is out of the question, people can only find ways to relieve the pain. In 1928, a famous scientist concluded the Mutation Theory of Cancer from repeating experiments. The basic concept behind the Mutation Theory is that the cancer originates from one cancer cell which is formed from mutation. The developing of cancer is a complex stage. What we still don't know is how many steps it takes for a normal cell to become a cancer cell. Anyhow， through prevented methods, the risk of taking a cancer can be reduced. |
