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Through the use of genetically modified mice so that they were susceptible to melanoma a researcher discovered that ultraviolet light causes mutations in the DNA of melanocytes in a gene called p53. This is one of the genes considered as guardians of the genome as it is key in detecting and repairing damage that accumulates in cells, such as that produced by ultraviolet light, and is a major barrier of the body against cancer. [Source: Asociación RUVID]
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