Cancer is recognized worldwide to be a major health problem affecting millions of people each year. More than 1 million people in the United States alone get cancer each year, and as of 2009, a total of 562,340 deaths from cancer were projected to occur in the United States yearly.
The main reason for such a high mortality rate from cancer is due to abnormal behaviors of certain cells, which usually results in cancer cell progression, tumor growth and metastasis.
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