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Abstract

The present invention provides stem-loop oligonucleotides containing a double-stranded stem domain of at least about 2 base pairs and a single-stranded loop domain. The loop domains of the present oligonucleotides include at least one parallel binding (P) domain separated by at least about 3 nucleotides from a corresponding anti-parallel binding (AP) domain. Each P and corresponding AP domain of the present oligonucleotides can bind detectably to one strand of a defined nucleic acid target wherein the P domain binds in a parallel manner to the target and the corresponding AP domain binds in an anti-parallel manner to the target. The present stem-loop oligonucleotides can bind to both single-stranded and double-stranded target nucleic acids. The present invention also provides methods of using these oligonucleotides as well as kits and pharmaceutical compositions containing these oligonucleotides.

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First Claim