stimulation of [ 14c ] -thymidine incorporation into microsomal dna after injection of methyl nitrosourea and 3,4-benz ( a ) pyrene may be accounted for not only by an increase of the dna reparation processes , since caffeine , the inhibitor of post-replicatory reparation of dna , did not eliminate the induction of microsomal dna synthesis in the liver .
C0012854
dna
C1511700
induction