Kolman A, Näslund M, Granath F
Department of Radiobiology, University of Stockholm, Sweden.
Mutat Res. 1989 Jun;212(2):269-74. doi: 10.1016/0027-5107(89)90078-x.
The influence of gamma-radiation pre-exposure on ethylene oxide, ethyl methanesulfonate and methyl methanesulfonate mutagenesis in Escherichia coli WU36-10 was studied. Pretreatment with gamma-radiation resulted, in the case of subsequent treatment with ethylene oxide and ethyl methanesulfonate, in a decrease of the frequency of leu+ revertants, and in the case of subsequent treatment with methyl methanesulfonate, in an increase of this mutation frequency.