Tumor suppressor genes.

Abstract excerpt

The retinoblastoma sensitivity protein (Rb) and the p53 gene product both appear to function as negative regulators of cell division or abnormal cellular growth in some differentiated cell types. Several types of cancers have been shown to be derived from cells that have extensively mutated both alleles of one or both of these genes, resulting in a loss-of-function mutation. In the case of the p53 gene, this...

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