Axelrod D E, Adler H I
J Bacteriol. 1969 Apr;98(1):329-30. doi: 10.1128/jb.98.1.329-330.1969.
The resistance of Escherichia coli to the lethal effects of X rays was increased by the presence of a fertility episome integrated into the chromosome.
整合到染色体中的致育附加体的存在增加了大肠杆菌对X射线致死效应的抗性。