Table 1.

DNA sequences and modifications.

strand name	sequence
Y1	5′-CGATTGACCACGCTGTCCTAACCATGACCGTCGAAG-3′
Y2	5′-CGATTGACCTTCGACGGTCATGTACTAGATCAGAGG-3′
Y3	5′-CGATTGACCCTCTGATCTAGTAGTTAGGACAGCGTG-3′
L1	5′-GTCAATCGTCTATTCGCATGAGGATCCCATTCACCGTAAG-3′
L2	5′-GTCAATCGCTTACGGTGAATGGGATCCTCATGCGAATAGA-3′
C-DNA	5′-(BHQ-1)-GTCAATCG-(BHQ-1)-3′