four pyrans of various molecular weights more potently inhibited terminal deoxyribonucleotidyltransferase ( ec 2.7.7.31 ) from a human cell line of acute lymphoblastic leukemia origin ( molt-4 ) than they did dna polymerases alpha , beta and gamma from these cells and dna polymerase from simian sarcoma virus .
C0012888
dna polymerases alpha
C0012892
dna polymerase