this animation shows what happens in a tumour there is cells which were dividing abnormally we will see in a few minutes they keep dividing at the expense of normal cells surrounding them. In three dimension once they divide enough they start pup out we can begin to see them with naked eye not just under microscope. then they recruit blood vessels they need to recruit blood vessels in order to grow a size that is great of than tenth of diameter.the blood vessels supply oxygen and nutrients….
related links:
http://www.cancer.org/ American Cancer Society
http://www.cancer.gov/ www.cancer.gov
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