The DExD/H-box helicase Dicer-2 mediates the induction of antiviral activity in drosophila.
Deddouche S, Matt N, Budd A, Mueller S, Kemp C, Galiana-Arnoux D, Dostert C, Antoniewski C, Hoffmann JA, Imler JL. Nat Immunol. 2008 Dec; 9(12):1425-32. Epub 2008 Oct 26.