The canser

Cancer is a group of diseases characterized by cells hostile Aggressive (which grow and divide without limits), and the ability of these dividing cells to invade adjacent tissues Invasion and destroy, or move to distant tissues in a process called metastasis by name. These capabilities are the characteristics of a malignant tumor on the opposite adenoma, which is characterized by specific growth and the inability to invasion and has no ability to move or transport. It can also adenoma evolved into a malignant cancer in some cases.

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