A normal gene that can lead to cancer is a proto-oncogene, one that causes a cell to become cancerous is an oncogene. A tumor suppressor inhibits cell division and a growth factor promotes cell division.
A normal gene that can lead to cancer (i.e., uncontrolled cellular proliferation) is called a proto-oncogene.
A gene that causes a cell to become cancerous is an oncogene, whereas a tumor suppressor gene encodes a protein that inhibits cell division.
A growth factor is a special type of protein that promotes cell division and whose excess may produce cancer.
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