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Cancer

Today there are one in three people worldwide who are affected by cancer, and almost 60% of these people will almost certainly die. 7000 New Zealanders die every year from this disease. It is the second largest killer next to heart disease. Cancer does not just affect certain groups of people, it can affect anybody and it is not just one disease, it refers to more than a hundred diseases. Cancer is caused by carcinogens. At present, hundreds of chemicals are known to induce cancer. Normally, the body's cells divide in an orderly way, allowing the body to grow and to heal after injury. Damage or mutations that occur to the proto-oncogenes (POG) and tumour suppresser Genes (TSG) in the genetic material (DNA and RNA) by these carcinogens bring about Cancer, which causes cells to have less control of cell division and differentiation. POGs lead to changed cells or transformed cells and cause excessive cell division. Further mutations cause the cells to become immortal. These......

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Approximate Word Count: 838
Approximate Pages: 4 (250 words per double-spaced page)

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