Saturday, 26 September 2015



Cancer is a term for diseases in which abnormal cells divide without control and can invade other tissues. Cancer cells can spread to other parts of the body through the blood and lymphatic systems.
Cells are the smallest structural unit of human body. Cells come together and form tissues and tissues come together and form organs. Specific organs have specific functions and together form the body. Inside the human body, wear and tear is a continuous process. Older cells are continuously replaced by newer cells. Human Body has a very fine control over the life cycle of these cells. When cells reach a specific age, they die naturally and this type of cell death is known as apoptosis. Cancer develops when the control over cell growth and cell cycle is lost.
In normal process cells divide as per the need and instruction of the human body. Genetic material inside these cells are present in the form of DNA. This DNA stores the information in the form of codes which governs the process of cell growth. Change in the basic structure of the DNA is called mutation. These mutated cells never undergo the normal process of cell division and thus results in abnormal cell growth. This abnormal cell growth forms a mass of tissue known as tumor.

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