poly[d(TC)].poly[d(GA)]
poly[d(tc)].poly[d(ga)]
A double-stranded DNA polynucleotide consisting of in one strand a repeating unit of thymidine and deoxycytidine residues, with in a complementary strand a repeating unit of deoxyguanosine and deoxyadenosine residues, all residues in each strand beiing connected by 3'→5' phosphodiester linkages.