title: Differential induction and repair of ultraviolet damage leading to true revesions and external suppressor mutations of an ochre codon in Escherichia coli B-r WP2.
mesh_terms: D003090:Coliphages; D003470:Culture Media; D004926:Escherichia coli; D005615:Freezing; D005815:Genetic Code; D009154:Mutation / Q000528:radiation effects*; D011831:Radiation Genetics; D014466:Ultraviolet Rays
chemical_list: D003470:Culture Media