derivatives of e. coli k-12 strain 343/113 differing in dna repair capacity , in permeability to large molecules , and in some metabolizing activities ( nitroreductase , glutathione ) , were constructed for the quantitative determination of the induction of various genetic effects , such as forward and back mutations , lysogenic induction of prophage lambda , and repairable dna damage .
C0012899
dna repair
C0012860
dna