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Ethidium bromide (EtBr) and SYBR Green I are nucleic acid gel stains and used commonly in combination with UV-illumination. EtBr preferentially induces frameshift mutations but only in the presence of an exogenous metabolic activation system, while SYBR Green I is a very weak mutagen that induces frameshift mutations. We found that EtBr and SYBR Green I, without an added metabolic activation system,...
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