TUMORS
The tumor or less commonly neoplasia (from the greek neo, new, and Plas, training), or if cancer is malignant, belongs to a class of diseases characterized by uncontrolled reproduction some body cells, which cease to respond to the mechanisms physiological control of cellular damage as a result of their genetic heritage. A cell to become cancerous is crazy, that there must be an error in the system that controls its reproduction. All cancer cells and precancerous are in fact very extensive alterations of their set of chromosomes (karyotype ): the number of chromosomes present in their nucleus is disrupted and the chromosomes themselves are damaged, missing or multiple
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