nitrogen mustard ( hn-2 ) , 4-hydroperoxycyclophosphamide ( cy-ooh ) , melphalan ( l-pam ) and chlorambucil ( ca ) had no effect on the elongation rate of newly replicated dna , both at low and high doses , although per cell the rate of dna synthesis declined as inferred from the rates of [ 3h ] thymidine incorporation compared to the increase in numbers of s phase cells in the treated populations .
C0012854
dna
C0598312
dna synthesis