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Chemical Mutagens, Light And Radiation, Repairing The Damage

A mutagen is any substance or agent that can cause a mutation, or change in the sequence or structure of DNA. Mutagens are classified on the basis of their physical nature and the types of damage they do. A mutagen is not the same as a carcinogen. Carcinogens are agents that cause cancer. While many mutagens are carcinogens as well, many others are not. The Ames test is a widely used test to screen chemicals used in foods or medications for mutagenic potential.

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Medicine EncyclopediaGenetics in Medicine - Part 3