Major Causes of Cancer
The following points highlight the three major causes of cancer. The causes are: 1. Radiant Energy 2. Chemical Compounds 3. Oncogenic Viruses. Cause # 1. Radiant Energy: (a) Ultraviolet rays, X-rays, and y-rays damage DNA in several ways. (b) Ultraviolet radiation may cause pyrimidine dimers to form. (c) Apurinic or apyrimidinic sites may form by elimination of corresponding bases. Single [...]