Cells are the basic units of life. They undergo a natural lifeand death cycle called mitosis and apoptosis. Under normalcircumstances, normal cells grow, divide and rest. But cancerouscells do not rest after they grow and divide - they continuouslyreplicate. However, proliferation of cells do NOT always result incancer, but instead form benign tumors. In your own words, explainthe difference between benign and malignant cells. Include the word\"metastasis\" in your explanation.
