Fig. 2.
CD spectra of ODNs at pH 7.2. (A) ODN1–ODN4 duplexes. (B) ODN3–ODN5 duplex (left) and 5fU-containing ODN3–ODN5 duplex with one (annealed to 5′-CTCAGGCAGTTC-3′), two (annealed to 5′-CTCG GACGGTTC-3′), and three (annealed to 5′-CTCGGGCGGTTC-3′) 5fU:G pairs (right). (C) Self-complementary ODN2 duplex.