Depto. de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil. cfmmenck@usp.br
Photolyases are enzymes involved in the repair of ultraviolet light−induced DNA damage when activated by light absorption. The generation of photolyase transgenic mice now suggests that an improved understanding of the mechanisms of skin damage and carcinogenesis induced by sunlight is in the offing.
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