small quantities of carcinogens , dl-ethionine , thiotepa , actinomycin d , and 1- ( 2-chloroethyl-3-cyclohexyl ) -1-nitrosourea ( ccnu ) stimulated in vitro deoxyribonucleic acid ( dna ) synthesis of the slime mutant of neurospora crassa , while there was practically no effect on the dna from the normal wild type 74a strain .
C0598312
deoxyribonucleic acid
C0012854
dna