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  4. Abnormal growth of the tumor in cancer is due to :

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Q. Abnormal growth of the tumor in cancer is due to :

Haryana PMTHaryana PMT 2005

Solution:

Sometimes certain cells which have differentiated and stopped dividing, suddenly start multiplying in an uncontrolled way to form a malignant growth called tumor. All cells carry certain cancer producing onchogenes. Under certain conditions these oncogenes are triggered to form masses of cells (tumor).