two chinese hamster ovary cell lines , the wild-type , aa8-4 , and a dna repair-deficient line , em9-1 , that is sensitive to ionizing radiation , were transfected with the recombinant dna plasmid , psv2-gpt , either in the absence or presence of high-molecular-weight carrier dna .
C0012931
recombinant dna
C0012854
dna