these observations suggest that the solutions of oligo ( dg ) 12-18 with ( polyc ) or its analogues , commonly used as primer-templates of rna- and dna-directed dna polymerases , contain a polynucleotide , to which oligo ( dg ) 12-18 aggregates are bound through a few nucleotides chains shorter than 12-18 residues .
C0032550
polynucleotide
C0028953
oligo