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The major types of cancer are:
• Carcinoma. Type of cancer that starts in cells that make up the skin.
• Sarcoma. Rare kind of cancer that grows in connective tissue.
• Melanoma. Type of cancer that develops from the pigment and typically occurs in the skin, but may rarely occurs in the mouth, intestines, or eye.
• Lymphoma. Type of cancer that begins in infection fighting cells of the immune system, called lymphocytes.
• Leukemia. Type of cancer of the body's blood-forming tissues, including the bone marrow and the lymphatic system

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• Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue.

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1. Benign tumours: These aren't cancerous and they won't spread.
2. Malignant tumours: These are cancerous and can spread to tissues and organs.

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• They're created when the genes responsible for regulating cell division are damaged.

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What are the characteristics of tumour cells?

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What are the characteristics of tumour cells?

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• Tumour cells are abnormally shaped and significantly vary in size. They're incapable of self-repair, they don't go through normal apoptosis and they don't perform normal cell functions.

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• A tumour is an abnormal growth of cells that serves no purpose.