Copyright information:Taken from "An SOS-regulated operon involved in damage-inducible mutagenesis in "Nucleic Acids Research 2005;33(8):2603-2614.Published online 10 May 2005PMCID:PMC1092274.© The Author 2005. Published by Oxford University Press. All rights reserved () Survival curves. () Frequency of Rif mutations induced by UV in the gene. The results shown are the mean of at least five independent experiments done in triplicate. Error bars indicate the SD.