poly[d(TTC)].poly[d(GAA)]
poly[d(ttc)].poly[d(gaa)]
A double-stranded DNA polynucleotide comprising in one strand a repeating sequence of two thymidine residues and and one deoxycytidine residue, with in a complementary strand a repeating sequence of one deoxyguanosine residue and two deoxyadenosine residues, all residues in each strand being connected by 3'→5' phosphodiester linkages.