UV-induced repair in Escherichia coli B/r Hcr-thy trp cells: its dependence on UV damage

Irradiation of Escherichia coli B/r Hcr- thy trp cells with a low UV-dose permits a post-replication repair of DNA and decreases the breakdown of DNA after a successive irradiation of cells with high UV doses. The usefulness of a repair function of the protein synthesized after a low irradiation dose increases with the increasing damage of DNA.