a cell variant ( vr-43 ) resistant to the cytotoxic effect of n-methyl-n'-nitro-n-nitrosoguanidine and n-methyl-n'-nitro-n-nitrosourea was isolated from chinese hamster v79 cells for use in studies of the relationship among cell survival , mutagenesis , and dna repair by alkylating agents .
C0007620
cell survival
C0012899
dna repair